{"id":4988,"date":"2016-05-19T11:49:00","date_gmt":"2016-05-19T06:19:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-class-9-maths-exercise-2-1\/"},"modified":"2018-06-18T09:37:21","modified_gmt":"2018-06-18T04:07:21","slug":"ncert-solutions-for-class-9-maths-exercise-2-1","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/","title":{"rendered":"NCERT Solutions for Class 9 Maths Exercise 2.1"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/#_NCERT_Solutions_for_Class_9_Maths_Polynomials\" >\u00a0NCERT Solutions for Class 9 Maths\u00a0Polynomials<\/a><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><ul class='ez-toc-list-level-6' ><li class='ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/#1_Which_of_the_following_expressions_are_polynomials_in_one_variable_and_which_are_not_State_reasons_for_your_answer\" >1. Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/#2_Write_the_coefficients_of_in_each_of_the_following\" >2. Write the coefficients of in each of the following:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/#3_Give_one_example_each_of_a_binomial_of_degree_35_and_of_a_monomial_of_degree_100\" >3. Give one example each of a binomial of degree 35, and of a monomial of degree 100.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/#4_Write_the_degree_of_each_of_the_following_polynomials\" >4. Write the degree of each of the following polynomials:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-6'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/#5_Classify_the_following_as_linear_quadratic_and_cubic_polynomials\" >5. Classify the following as linear, quadratic and cubic polynomials:<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/#NCERT_Solutions_for_Class_9_Maths_Exercise_21\" >NCERT Solutions for Class 9 Maths Exercise 2.1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/#CBSE_app_for_Class_9\" >CBSE app for Class 9<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT Solutions for Class 9 Maths Exercise 2.1 book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE board exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 9 Maths chapter wise NCERT solution for Maths Book for all the chapters can be downloaded from our website and myCBSEguide mobile app for free.<\/p>\n<p style=\"text-align: center;\"><strong>NCERT solutions for Class 9 Maths\u00a0Polynomials\u00a0<\/strong><strong><a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-09-mathematics-polynomials\/1236\/ncert-solutions\/5\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/09_Class_Maths_Book.jpg\" alt=\"NCERT Solutions for Class 9 Maths Exercise 2.1\" width=\"167\" height=\"215\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"_NCERT_Solutions_for_Class_9_Maths_Polynomials\"><\/span>\u00a0NCERT Solutions for Class 9 Maths\u00a0Polynomials<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"1_Which_of_the_following_expressions_are_polynomials_in_one_variable_and_which_are_not_State_reasons_for_your_answer\"><\/span><strong>1. Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>(i)<img decoding=\"async\" style=\"height: 21px; width: 85px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image001.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(ii) <img decoding=\"async\" style=\"height: 25px; width: 56px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image002.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(iii) <img decoding=\"async\" style=\"height: 24px; width: 69px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image003.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(iv) <img decoding=\"async\" style=\"height: 44px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image004.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(v) <img decoding=\"async\" style=\"height: 24px; width: 83px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image005.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans. (i)<\/strong><img decoding=\"async\" style=\"height: 21px; width: 85px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image001.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that in the polynomial<img decoding=\"async\" style=\"height: 21px; width: 85px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image001.png\" \/>, we have <em>x<\/em> as the only variable and the powers of <em>x<\/em> in each term are a whole number.<\/p>\n<p style=\"text-align: justify;\">Therefore, we conclude that<img decoding=\"async\" style=\"height: 21px; width: 85px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image001.png\" \/>is a polynomial in one variable.<\/p>\n<p style=\"text-align: justify;\"><strong>(ii)<\/strong><img decoding=\"async\" style=\"height: 25px; width: 56px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image002.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that in the polynomial<img decoding=\"async\" style=\"height: 25px; width: 56px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image002.png\" \/>, we have <em>y<\/em> as the only variable and the powers of <em>y<\/em> in each term are a whole number.<\/p>\n<p style=\"text-align: justify;\">Therefore, we conclude that<img decoding=\"async\" style=\"height: 25px; width: 56px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image002.png\" \/>is a polynomial in one variable.<\/p>\n<p style=\"text-align: justify;\"><strong>(iii)<\/strong><img decoding=\"async\" style=\"height: 24px; width: 69px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image003.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that in the polynomial<img decoding=\"async\" style=\"height: 24px; width: 69px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image003.png\" \/>, we have <em>t<\/em> as the only variable and the powers of <em>t<\/em> in each term are not a whole number.<\/p>\n<p style=\"text-align: justify;\">Therefore, we conclude that<img decoding=\"async\" style=\"height: 24px; width: 69px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image003.png\" \/>is not a polynomial in one variable.<\/p>\n<p style=\"text-align: justify;\"><strong>(iv)<\/strong><img decoding=\"async\" style=\"height: 44px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image004.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that in the polynomial<img decoding=\"async\" style=\"height: 44px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image004.png\" \/>, we have <em>y<\/em> as the only variable and the powers of <em>y<\/em> in each term are not a whole number.<\/p>\n<p style=\"text-align: justify;\">Therefore, we conclude that<img decoding=\"async\" style=\"height: 44px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image004.png\" \/>is not a polynomial in one variable.<\/p>\n<p style=\"text-align: justify;\"><strong>(v)<\/strong><img decoding=\"async\" style=\"height: 24px; width: 83px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image005.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that in the polynomial<img decoding=\"async\" style=\"height: 24px; width: 83px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image005.png\" \/>, we have <em>x<\/em>, <em>y<\/em> and <em>t<\/em> as the variables and the powers of <em>x<\/em>, <em>y<\/em> and <em>t<\/em> in each term is a whole number.<\/p>\n<p style=\"text-align: justify;\">Therefore, we conclude that<img decoding=\"async\" style=\"height: 24px; width: 83px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image005.png\" \/> is a polynomial but not a polynomial in one variable.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Maths Exercise 2.1<\/p>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"2_Write_the_coefficients_of_in_each_of_the_following\"><\/span><strong>2. Write the coefficients of<img decoding=\"async\" style=\"height: 21px; width: 19px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image006.png\" \/> in each of the following:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>(i)<img decoding=\"async\" style=\"height: 21px; width: 65px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image007.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(ii)<img decoding=\"async\" style=\"height: 21px; width: 69px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image008.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(iii)<img decoding=\"async\" style=\"height: 41px; width: 57px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image009.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(iv)<img decoding=\"async\" style=\"height: 23px; width: 52px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image010.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans. (i)<\/strong><img decoding=\"async\" style=\"height: 21px; width: 65px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image007.png\" \/><\/p>\n<p style=\"text-align: justify;\">The coefficient of<img decoding=\"async\" style=\"height: 21px; width: 19px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image006.png\" \/>in the polynomial<img decoding=\"async\" style=\"height: 21px; width: 65px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image007.png\" \/>is 1.<\/p>\n<p style=\"text-align: justify;\"><strong>(ii)<\/strong><img decoding=\"async\" style=\"height: 21px; width: 69px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image008.png\" \/><\/p>\n<p style=\"text-align: justify;\">The coefficient of<img decoding=\"async\" style=\"height: 21px; width: 19px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image006.png\" \/>in the polynomial<img decoding=\"async\" style=\"height: 21px; width: 69px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image008.png\" \/>is<img decoding=\"async\" style=\"height: 17px; width: 20px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image011.png\" \/>.<\/p>\n<p style=\"text-align: justify;\"><strong>(iii)<\/strong><img decoding=\"async\" style=\"height: 41px; width: 57px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image009.png\" \/><\/p>\n<p style=\"text-align: justify;\">The coefficient of<img decoding=\"async\" style=\"height: 21px; width: 19px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image006.png\" \/>in the polynomial<img decoding=\"async\" style=\"height: 41px; width: 57px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image009.png\" \/>is<img decoding=\"async\" style=\"height: 41px; width: 17px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image012.png\" \/>.<\/p>\n<p style=\"text-align: justify;\"><strong>(iv)<\/strong><img decoding=\"async\" style=\"height: 23px; width: 52px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image010.png\" \/><\/p>\n<p style=\"text-align: justify;\">The coefficient of<img decoding=\"async\" style=\"height: 21px; width: 19px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image006.png\" \/>in the polynomial<img decoding=\"async\" style=\"height: 23px; width: 52px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image010.png\" \/>is 0.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Maths Exercise 2.1<\/p>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"3_Give_one_example_each_of_a_binomial_of_degree_35_and_of_a_monomial_of_degree_100\"><\/span><strong>3. Give one example each of a binomial of degree 35, and of a monomial of degree 100.<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>Ans. <\/strong>The binomial of degree 35 can be<img decoding=\"async\" style=\"height: 21px; width: 47px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image013.png\" \/>.<\/p>\n<p style=\"text-align: justify;\">The binomial of degree 100 can be<img decoding=\"async\" style=\"height: 21px; width: 24px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image014.png\" \/>.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Maths Exercise 2.1<\/p>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"4_Write_the_degree_of_each_of_the_following_polynomials\"><\/span><strong>4. Write the degree of each of the following polynomials:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>(i)<img decoding=\"async\" style=\"height: 24px; width: 147px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image015.png\" \/> <\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(ii)<img decoding=\"async\" style=\"height: 24px; width: 87px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image016.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(iii)<img decoding=\"async\" style=\"height: 25px; width: 95px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image017.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(iv) <img decoding=\"async\" style=\"height: 27px; width: 51px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image018.png\" \/>3<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans. (i)<\/strong><img decoding=\"async\" style=\"height: 21px; width: 100px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image019.png\" \/><\/p>\n<p style=\"text-align: justify;\">We know that the degree of a polynomial is the highest power of the variable in the polynomial.<\/p>\n<p style=\"text-align: justify;\">We can observe that in the polynomial<img decoding=\"async\" style=\"height: 21px; width: 100px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image019.png\" \/>, the highest power of the variable <em>x<\/em> is 3.<\/p>\n<p style=\"text-align: justify;\">Therefore, we conclude that the degree of the polynomial<img decoding=\"async\" style=\"height: 21px; width: 100px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image019.png\" \/>is 3.<\/p>\n<p style=\"text-align: justify;\"><strong>(ii)<\/strong><img decoding=\"async\" style=\"height: 24px; width: 41px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image020.png\" \/><\/p>\n<p style=\"text-align: justify;\">We know that the degree of a polynomial is the highest power of the variable in the polynomial.<\/p>\n<p style=\"text-align: justify;\">We can observe that in the polynomial<img decoding=\"async\" style=\"height: 24px; width: 41px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image020.png\" \/>, the highest power of the variable <em>y<\/em> is 2.<\/p>\n<p style=\"text-align: justify;\">Therefore, we conclude that the degree of the polynomial<img decoding=\"async\" style=\"height: 24px; width: 41px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image020.png\" \/>is 2.<\/p>\n<p style=\"text-align: justify;\"><strong>(iii)<\/strong><img decoding=\"async\" style=\"height: 24px; width: 52px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image021.png\" \/><\/p>\n<p style=\"text-align: justify;\">We know that the degree of a polynomial is the highest power of the variable in the polynomial.<\/p>\n<p style=\"text-align: justify;\">We observe that in the polynomial<img decoding=\"async\" style=\"height: 24px; width: 52px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image021.png\" \/>, the highest power of the variable <em>t<\/em> is 1.<\/p>\n<p style=\"text-align: justify;\">Therefore, we conclude that the degree of the polynomial<img decoding=\"async\" style=\"height: 24px; width: 52px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image021.png\" \/>is 1.<\/p>\n<p style=\"text-align: justify;\"><strong>(iv)<\/strong>3<\/p>\n<p style=\"text-align: justify;\">We know that the degree of a polynomial is the highest power of the variable in the polynomial.<\/p>\n<p style=\"text-align: justify;\">We can observe that in the polynomial 3, the highest power of the assumed variable <em>x<\/em> is 0.<\/p>\n<p style=\"text-align: justify;\">Therefore, we conclude that the degree of the polynomial 3 is 0.<\/p>\n<hr \/>\n<p style=\"text-align: center;\">NCERT Solutions for Class 9 Maths Exercise 2.1<\/p>\n<h6 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"5_Classify_the_following_as_linear_quadratic_and_cubic_polynomials\"><\/span><strong>5. Classify the following as linear, quadratic and cubic polynomials:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h6>\n<p style=\"text-align: justify;\"><strong>(i)<img decoding=\"async\" style=\"height: 21px; width: 48px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image022.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(ii)<img decoding=\"async\" style=\"height: 21px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image023.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(iii)<img decoding=\"async\" style=\"height: 24px; width: 67px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image024.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(iv)<img decoding=\"async\" style=\"height: 19px; width: 37px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image025.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(v) 3<em>t<\/em><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(vi)<img decoding=\"async\" style=\"height: 20px; width: 17px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image026.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>(vii)<img decoding=\"async\" style=\"height: 21px; width: 27px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image027.png\" \/><\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>Ans. (i)<\/strong><img decoding=\"async\" style=\"height: 21px; width: 48px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image022.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that the degree of the polynomial<img decoding=\"async\" style=\"height: 21px; width: 48px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image022.png\" \/>is 2.<\/p>\n<p style=\"text-align: justify;\">Therefore, we can conclude that the polynomial<img decoding=\"async\" style=\"height: 21px; width: 48px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image022.png\" \/>is a quadratic polynomial.<\/p>\n<p style=\"text-align: justify;\"><strong>(ii)<\/strong><img decoding=\"async\" style=\"height: 21px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image023.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that the degree of the polynomial<img decoding=\"async\" style=\"height: 21px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image023.png\" \/>is 3.<\/p>\n<p style=\"text-align: justify;\">Therefore, we can conclude that the polynomial<img decoding=\"async\" style=\"height: 21px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image023.png\" \/>is a cubic polynomial.<\/p>\n<p style=\"text-align: justify;\"><strong>(iii)<\/strong><img decoding=\"async\" style=\"height: 24px; width: 67px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image024.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that the degree of the polynomial<img decoding=\"async\" style=\"height: 24px; width: 67px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image024.png\" \/>is 2.<\/p>\n<p style=\"text-align: justify;\">Therefore, the polynomial<img decoding=\"async\" style=\"height: 24px; width: 67px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image024.png\" \/>is a quadratic polynomial.<\/p>\n<p style=\"text-align: justify;\"><strong>(iv)<\/strong><img decoding=\"async\" style=\"height: 19px; width: 37px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image025.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that the degree of the polynomial<img decoding=\"async\" style=\"height: 27px; width: 49px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image028.png\" \/>is 1.<\/p>\n<p style=\"text-align: justify;\">Therefore, we can conclude that the polynomial<img decoding=\"async\" style=\"height: 19px; width: 37px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image025.png\" \/>is a linear polynomial.<\/p>\n<p style=\"text-align: justify;\"><strong>(v)<\/strong><img decoding=\"async\" style=\"height: 19px; width: 17px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image029.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that the degree of the polynomial<img decoding=\"async\" style=\"height: 27px; width: 29px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image030.png\" \/>is 1.<\/p>\n<p style=\"text-align: justify;\">Therefore, we can conclude that the polynomial<img decoding=\"async\" style=\"height: 19px; width: 17px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image029.png\" \/>is a linear polynomial.<\/p>\n<p style=\"text-align: justify;\"><strong>(vi)<\/strong><img decoding=\"async\" style=\"height: 20px; width: 17px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image026.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that the degree of the polynomial<img decoding=\"async\" style=\"height: 20px; width: 17px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image026.png\" \/>is 2.<\/p>\n<p style=\"text-align: justify;\">Therefore, we can conclude that the polynomial<img decoding=\"async\" style=\"height: 20px; width: 17px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image026.png\" \/>is a quadratic polynomial.<\/p>\n<p style=\"text-align: justify;\"><strong>(vii)<\/strong><img decoding=\"async\" style=\"height: 21px; width: 27px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image027.png\" \/><\/p>\n<p style=\"text-align: justify;\">We can observe that the degree of the polynomial<img decoding=\"async\" style=\"height: 21px; width: 27px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image027.png\" \/>is 3.<\/p>\n<p style=\"text-align: justify;\">Therefore, we can conclude that the polynomial<img decoding=\"async\" style=\"height: 21px; width: 27px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/09\/maths\/ch02\/Ex2.1\/image027.png\" \/>is a cubic polynomial.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_9_Maths_Exercise_21\"><\/span>NCERT Solutions for Class 9 Maths Exercise 2.1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>NCERT Solutions Class 9 Maths PDF (Download) Free from myCBSEguide app and myCBSEguide website. Ncert solution class 9 Maths includes text book solutions from Mathematics Book. NCERT Solutions for CBSE Class 9 Maths have total 15 chapters. 9 Maths NCERT Solutions in PDF for free Download on our website. Ncert Maths class 9 solutions PDF and Maths ncert class 9 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"CBSE_app_for_Class_9\"><\/span>CBSE app for Class 9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To download NCERT Solutions for Class 9 Maths, Computer Science, Home Science,Hindi ,English, Social Science do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and myCBSEguide website.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions for Class 9 Maths Exercise 2.1 book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE board exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 9 Maths chapter &#8230; <a title=\"NCERT Solutions for Class 9 Maths Exercise 2.1\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-maths-exercise-2-1\/\" aria-label=\"More on NCERT Solutions for Class 9 Maths Exercise 2.1\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":-1,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1376,281],"tags":[283,1344,321,1485,216],"class_list":["post-4988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mathematics-cbse-class-09","category-ncert-solutions","tag-cbse-study-material","tag-class-9","tag-mathematics","tag-maths","tag-ncert-solutions"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>NCERT Solutions for Class 9 Maths Exercise 2.1 | myCBSEguide<\/title>\n<meta name=\"description\" content=\"NCERT Solutions for Class 9 Maths Exercise 2.1 in PDF format for free download. 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