English Medium कक्षा ९ - CBSE Question Bank Solutions

Find the value of `6/(sqrt5 - sqrt3)` it being given that `sqrt3 = 1.732` and  `sqrt5 = 2.236`

Find the values the following correct to three places of decimals, it being given that `sqrt2 = 1.4142`, `sqrt3 = 1.732`, `sqrt5 = 2.2360`, `sqrt6 = 2.4495` and `sqrt10 = 3.162`

`(3 - sqrt5)/(3 + 2sqrt5)`

Find the values the following correct to three places of decimals, it being given that `sqrt2 = 1.4142`, `sqrt3 = 1.732`, `sqrt5 = 2.2360`, `sqrt6 = 2.4495` and `sqrt10 = 3.162`

`(1 + sqrt2)/(3 - 2sqrt2)`

Simplify `(3sqrt2 - 2sqrt3)/(3sqrt2 + 2sqrt3) + sqrt12/(sqrt3 - sqrt2)`

Simplify `(7 + 3sqrt5)/(3 + sqrt5) - (7 - 3sqrt5)/(3 - sqrt5)`

if `x = 2 +  sqrt3`,find the value of `x^2 + 1/x^2`

if   `x= 3 + sqrt8`, find the value of `x^2 + 1/x^2`

if `x =  (sqrt3 + 1)/2` find the value of `4x^2 +2x^2 - 8x + 7` 

Write the coefficient of x² in the following:

`17 -2x + 7x^2`

Write the coefficient of x² in the following:

`9-12x +X^3`

Write the coefficient of x² in the following:

`pi/6x^2- 3x+4`

Write the coefficient of x² in the following:

`sqrt3x-7`

Write the degrees of each of the following polynomials

`7x3 + 4x2 – 3x + 12`

Write the degrees of the following polynomials:

`12-x+2x^3` 

Write the degrees of the following polynomials:

`5y-sqrt2`

Write the degrees of the following polynomials:

7

Write the degrees of the following polynomials

0

Identify polynomials in the following:

`f(x)=4x^3-x^2-3x+7`

Identify polynomials in the following:

`g(x)=2x^3-3x^2+sqrtx-1`

Identify polynomials in the following:

`p(x)=2/3x^3-7/4x+9`