No products in the cart.

√5 is a irrational

CBSE, JEE, NEET, CUET

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

√5 is a irrational

Posted by Abhinav Jha 4 years, 7 months ago

CBSE > Class 10 > Mathematics

5 answers

Anuradha Chaudhary 4 years, 7 months ago

We prove by contradiction method. Let assume that √5 is rational. √5=p/q ---eq......1 P and q are co prime integer with common factor 1. Squaring both side equation 1 5=p²/q² :. q²=p²/5 eq...2 It means p² have factor 5 so p would also have sector 5. p=5x squaring both side p²=25x² Puting this value of p² in equation 2 q²=25x²/5 q²=5x² q²/5=x² This means q² have factor 5. But our assumption says p and q have common factor 1. So our assumption was wrong √5 is irrational number.

Mamta ... 4 years, 7 months ago

yes √ 5 is an irrational no.

Ayan Patel 4 years, 7 months ago

Let 5 be a rational number. then it must be in form of qp where, q=0 ( p and q are co-prime) 5=qp 5×q=p Suaring on both sides, 5q2=p2 --------------(1) p2 is divisible by 5. So, p is divisible by 5. p=5c Suaring on both sides, p2=25c2 --------------(2) Put p2 in eqn.(1) 5q2=25(c)2 q2=5c2 So, q is divisible by 5. . Thus p and q have a common factor of 5. So, there is a contradiction as per our assumption. We have assumed p and q are co-prime but here they a common factor of 5. The above statement contradicts our assumption. Therefore, 5 is an irrational number.

Ayan Patel 4 years, 7 months ago

√5 =p/q

Ayan Patel 4 years, 7 months ago

Let us assume that√5 is rational

ANSWER

https://examin8.com

Test

Related Questions

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Hari Anand 5 months ago

CBSE > Class 10 > Mathematics

0 answers

(A + B )²

Posted by Abhishek Gupta 2 weeks, 3 days ago

CBSE > Class 10 > Mathematics

1 answers

X-y=5

Posted by Kishan Thakur 1 year, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Venu Gopal has twice

Posted by Lakshay Kumar 11 months, 3 weeks ago

CBSE > Class 10 > Mathematics

0 answers

If 1/2 is a root of equation x^2+kx- 5/4 =0 , then what is the value of k

Posted by Parinith Gowda Ms 2 months, 1 week ago

CBSE > Class 10 > Mathematics

1 answers

sin60° cos 30°+ cos60° sin 30°

Posted by Vanshika Bhatnagar 1 year, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Kanika . 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Is it possible to design a rectangular mango Grove whose length is twice it's breadth, and the area is 800m²? If so, find it's length and breadth

Posted by Akshata Choukse 1 year, 3 months ago

CBSE > Class 10 > Mathematics

0 answers

Find the nature of quadratic equation x^2 +x -5 =0

Posted by Parinith Gowda Ms 2 months, 1 week ago

CBSE > Class 10 > Mathematics

0 answers

Prove that root 8 is an irration number

Posted by Sahil Sahil 1 year, 3 months ago

CBSE > Class 10 > Mathematics

2 answers

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App