English Medium Class 9 - CBSE Question Bank Solutions

Write the degree of the following polynomial:-

5x³ + 4x² + 7x

Classify the following as linear, quadratic and cubic polynomial:

x² + x

Use suitable identity to find the following product:

(x + 4) (x + 10) 

Use suitable identity to find the following product:

(x + 8) (x – 10)

Use suitable identity to find the following product:

(3x + 4) (3x – 5)

Use suitable identity to find the following product:

`(y^2+3/2)(y^2-3/2)`

Use suitable identity to find the following product:

(3 – 2x) (3 + 2x)

Evaluate the following product without multiplying directly:

103 × 107

Evaluate the following product without multiplying directly:

95 × 96

Evaluate the following product without multiplying directly:

104 × 96

Factorise the following using appropriate identity:

9x² + 6xy + y² 

Factorise the following using appropriate identity:

4y² – 4y + 1

Factorise the following using appropriate identity:

`x^2 - y^2/100`

Expand the following, using suitable identity:

(x + 2y + 4z)² 

Expand the following, using suitable identity:

(2x – y + z)² 

Expand the following, using suitable identity:

(–2x + 3y + 2z)²

Expand the following, using suitable identity:

(3a – 7b – c)² 

Expand the following, using suitable identity:

(–2x + 5y – 3z)²

Expand the following, using suitable identity:

`[1/4a-1/2b+1]^2`

Factorise:

4x² + 9y² + 16z² + 12xy – 24yz – 16xz