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If x=7+4√3 , find the value of √x+1/√x

Posted by Tanya Negi 4 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Nancy Singh 4 years, 2 months ago

Given : x = 7 + 4√3 To find : √x + 1 / √x. Solution : x = 7 + 4√3. ⇒ x = 4 + 3 + 4√3. ⇒ x = 2² + √3² + 2 × 2 × √3. ⇒ x = ( 2 + √3)² ⇒ √x = 2 + √3. Now, 1 /√x = 1 / 2 + √3 × 2 - √3 / 2 - √3. ⇒ 1 / √x = 2 - √3 / 2² - √3² ⇒ 1 / √x = 2 - √3 / 4 - 3. ⇒ 1 / √x = 2 - √3. Again, √x +1 / √x = 2 + √3 + 2 - √3. ⇒ √x + 1 / √x = 2 + 2.

ANSWER

Rational numbers between 2/7 and 1/3

Posted by Pragati Wankhede 4 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Hanshika (Honey) 4 years, 2 months ago

There are Infinite rational numbers between two rational no.s....

ANSWER

. Simplified form of (√2-2) (√2+2 ) is (a) 0 (b) 2 (c) 1 (d) -2

Posted by Anshul Kumari 4 years, 2 months ago

CBSE > Class 09 > Mathematics

4 answers

Sam Kr. 4 years, 2 months ago

Option d

Madhav Manroa 4 years, 2 months ago

Option d

Richa Shree 4 years, 2 months ago

Using (a^2-b^2)

Richa Shree 4 years, 2 months ago

Option d

ANSWER

Find value of X:-(25/64)^8 ×(2/5)^7=(2/5)^2x+9

Posted by Nishant Thakur 4 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Find the remainder when 3x-ax spuare + 8x-7a is divided by x+a

Posted by Sajitha Sree 4 years, 2 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Simplify √(19+√360) - √(21+√440) + √(20-√396)

Posted by Hanshika (Honey) 4 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Hanshika (Honey) 4 years, 2 months ago

Plz ans my qu

ANSWER

Factorize x³-2x-x+2

Posted by Hridayansh Periwal 4 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Kabir Gupta 4 years, 2 months ago

x³-x-2x+2 x(x²-1)-2(x-1) x(x-1)(x+1)-2(x-1) (x-1)[x(x+1)-2] (x-1)(x²+x-2)

ANSWER

If a^p =b^q =c^r=abc, then pqr =???

Posted by Hanshika (Honey) 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Hanshika (Honey) 4 years, 2 months ago

Answer ???

ANSWER

How many 2+2

Posted by Zaara Khan 4 years, 3 months ago

CBSE > Class 09 > Mathematics

5 answers

Yash Choudhary 4 years, 2 months ago

4 is the correct answer

Komal Tank 4 years, 2 months ago

4

Suzanne Smitha 4 years, 3 months ago

4

Prasanna Prasanna 4 years, 3 months ago

4

Zaara Khan 4 years, 3 months ago

4

ANSWER

Can i add to different value under square root

Posted by Ankur Kalita 4 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Nishant Thakur 4 years, 2 months ago

No u can't add and subtract in square root

Yash Choudhary 4 years, 2 months ago

No u can't

Shreyansh Jain 4 years, 3 months ago

No in square root only multiply and divide can occur

ANSWER

5x ×4x

Posted by Bhaskkar Mishra 4 years, 3 months ago

CBSE > Class 09 > Mathematics

5 answers

Yash Choudhary 4 years, 2 months ago

20x is the correct answer

Anvesha Baranwal 4 years, 3 months ago

20x²

Anupriya Kumari 4 years, 3 months ago

20x is the answer when we multiply 5x × 4x = 20x

Indrani Sahu 4 years, 3 months ago

20x²

Sneha Singh 4 years, 3 months ago

20x square

ANSWER

Simplify (32/343)^-4/5

Posted by Piyush Pandey 4 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Neha Jadav 4 years, 3 months ago

81√16

Yogita Ingle 4 years, 3 months ago

Consider, [32/243]^-4/5

ANSWER

The radius of a spherical balloon increases from 3 cm to 9 cm when inflated. What is the ratio of the balloon’s uninflated surface area to its inflated surface area?

Posted by Joseph Anurag 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Two circles intersect at two points B and C. Through B , two line segment ABD and PBQ are drawn to intersect the circles at A, D and P, Q respective ly. Prove that angle ACP equal to angle QCD

Posted by Omila Tongbram 4 years, 3 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

What do you mean by arc ?

Posted by Ankit Kumar 4 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Suzanne Smitha 4 years, 3 months ago

Portion of circumference of circle

Richa Shree 4 years, 3 months ago

A curve part of the circular circumference is known as arc

ANSWER

Factorise a square+14a+48

Posted by K V 4 years, 3 months ago

CBSE > Class 09 > Mathematics

5 answers

Madhav Manroa 4 years, 2 months ago

(A+8)( a+6) is correct answer

Nishant Thakur 4 years, 2 months ago

a^2+14a+48=a^2+8a+6a+48=a(a+8) 6(a+8)=(a+8) (a+6)

Indrani Sahu 4 years, 3 months ago

By splitting middle term a²+14a+48 =a²+(6+8)a+48 =a²+6a+8a+48 =a(a+6)+8(a+6) =(a+6)(a+8)

Anjali Patel 4 years, 3 months ago

a²+(8+6)a+48 a²+8a+6a+48 a(a+8)+6(a+8) (a+8)(a+6)

Anushka Agarwal 4 years, 3 months ago

a² + 14a + 48 = a² + (8+6)a + 48 = a² + 8a + 6a + 48 = a(a+8) + 6(a+8) = (a+8)(a+6) Answer : (a+8)(a+6)

ANSWER

How to represent under root 3

Posted by Anup Jain 4 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Nandini Arora 4 years, 2 months ago

1.73

Anup Jain 4 years, 3 months ago

How to represent under root 3 in number line

Anushka Agarwal 4 years, 3 months ago

√3

Dhruv Pandey Pandey 4 years, 3 months ago

How to represent under root 3

ANSWER

Size of blood cells is 0.000007m write these number in standard form

Posted by Alisha Afroz 4 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Shangeetha M.Shangeetha 4 years, 3 months ago

7×10^6

Yogita Ingle 4 years, 3 months ago

Given the size of red blood cells is 0.000007mm.

0.000007mm = 0.000007 × ( 10⁶/10⁶ )

= ( 0.000007 ×10⁶ ) × 1/10⁶

= 7 × 1/10^6

= 7 × 10^-6 mm

ANSWER

In triangle ABC side AB equals to AC then prove angle B equals to angle C no graph given in the question prove using congruency criteria please........

Posted by Kartikeya Srivastav 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Rajwardhan Singh 4 years, 3 months ago

Construction:- In the center of isosceles ?️ draw a perpendicular line AD now angle ADC=angle ADB Also,AD is common Also,BD=CD As of SAS criteria angle C=angleB

ANSWER

give the geometrical representation of 2x- 6 =0 as an equation in one variable

Posted by Harshitha Mohan 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 4 years, 3 months ago

Give the geometric representations of 2x + 9 = 0 as an equation

(1) in one variable

(2) in two variables

answer :

(1) In one variable, 2x + 9 = 0 represents a point x = -9/2 = -4.5

(2) In two variables, 2x + 9 = 0 represents a straight line passing through point (−4.5, 0) and parallel to y-axis. It is a collection of all points of the plane, having their x-coordinate as 4.5.

ANSWER

I want rd sharma solutions of class 9th

Posted by Kunal Bhargav 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Anushka Agarwal 4 years, 3 months ago

U may open this link⬇ https://rdsharmasolution.com/rd-sharma-class-9-solutions/

ANSWER

Simplify by rationalising the denominator 10/5 sq root -3 sq root 5 with method

Posted by Dhanyatha S Maddodi 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Hulash Dhruw 4 years, 3 months ago

For rationalising the denominator of any number 1/√a-b , we multiply it by √a+b/√a+b. =10/√5-3× √5+3/√5+3 =10×√5+3/5+(3)² =10√5+3/14

ANSWER

under root Csq/4 * Asq - Csq/4 (asq- bsq +C sq/2c)sq

Posted by Gurveen Singh 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Hanshika (Honey) 4 years, 2 months ago

Didn't understand your question

ANSWER

zero polynomial means

Posted by Kushal Borse 4 years, 3 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 4 years, 3 months ago

Zero Polynomial. The constant polynomial. whose coefficients are all equal to 0. The corresponding polynomial function is the constant function with value 0, also called the zero map. The zero polynomial is the additive identity of the additive group of polynomials.

Examples: xyz + x + y + z is a polynomial of degree three; 2x + y − z + 1 is a polynomial of degree one (a linear polynomial); and 5x2 − 2x2 − 3x2 has no degree since it is a zero polynomial. A polynomial all of whose terms have the same exponent is said to be a homogeneous polynomial, or a form. Forms of the first, second, and third degrees are said to be linear, quadratic, and cubic. Forms in two or three variables are called binary or ternary, for example, x2 + y2 + z2 − xy − yz − xz is a ternary quadratic form.

ANSWER

Prove that √n is not a rational number.

Posted by Divanjyoti Deka 4 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Yogita Ingle 4 years, 3 months ago

If n is not a perfect square then is irrational
Let on the contrary say it is rational .

Then

where p and q are coprime integers.
so n =p²/q²

p² =nq²

This shows p divides q

which is a contradiction.

Hence is irrational if n is not a perfect square.

Malhar Mv 4 years, 3 months ago

We have to prove that √n is not a rational number, if n is not a perfect square. Ex: Let we take the number is √5 Here 5 is not a perfect square. Proof: ... Thus p and q has a common factor 5.

ANSWER

Number line walla question CBSE 9th class

Posted by Tashu Mall 4 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Nandini Arora 4 years, 2 months ago

Check your ncert book first??. And then ask your doubt

Kartikeya Srivastav 4 years, 3 months ago

Number line vale bahut questions hai exercise aur question number bolo

ANSWER

True or False: Every point on the number line is of the form roots . Where m is a natural number

Posted by Laasya Mannem 4 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Dhanyatha S Maddodi 4 years, 3 months ago

False

Malhar Mv 4 years, 3 months ago

Thus, every irrational number is a real number. Reason: A number line may have negative or positive number. Since, no negative can be the square root of a natural number, thus every point on the number line cannot be in the form of √m, where m is a natural number.

Sandeep Singh 4 years, 3 months ago

False

ANSWER

Praveen wanted to make a temporary

Posted by Akkinapally Madhulika 4 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Nandini Arora 4 years, 2 months ago

??? What. Are you okay ?

ANSWER

Rationalise the denominator √3+√2/√3-√2

Posted by Malavika K 4 years, 3 months ago

CBSE > Class 09 > Mathematics

4 answers

Dhanyatha S Maddodi 4 years, 3 months ago

1

Mahandra Chauhan 4 years, 3 months ago

1

Ashok Kumar Ashok Kumar 4 years, 3 months ago

P/q 0 ?

Ashok Kumar Ashok Kumar 4 years, 3 months ago

450 +250

ANSWER

How to find solution

Posted by Shraval Jr Háldàñkâr 4 years, 3 months ago

CBSE > Class 09 > Mathematics

3 answers

Nandini Arora 4 years, 2 months ago

First understand the question and tgen go to hell??

Yug Begrajka 4 years, 3 months ago

Question has solutions it self

Kashish Bassan 4 years, 3 months ago

Gghuu

ANSWER

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