Secondary School (English Medium) (5 to 8) Class 8 - CBSE Question Bank Solutions

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

x² – 10x + 25

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

y² – 14y + 49

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

p² – 2p + 1

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

4a² – 4ab + b² 

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

p²y² – 2py + 1

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

a²y² – 2aby + b²

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

9x² – 12x + 4

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

4y² – 12y + 9

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

`x^2/4 - 2x + 4`

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

a²y³ – 2aby² + b²y

Factorise the following, using the identity a² – 2ab + b² = (a – b)².

`9y^2 - 4xy + (4x^2)/9`

Factorise the following.

y² + 4y – 21

Factorise the following.

y² – 2y – 15

Factorise the following.

x² – 10x + 21

Factorise the following.

x² – 17x + 60

Factorise the following.

x² + 4x – 77

Factorise the following.

p² – 13p – 30

Factorise the following.

a² – 16p – 80

The curved surface area of a cylinder is 2π(y² – 7y + 12) and its radius is (y – 3). Find the height of the cylinder (C.S.A. of cylinder = 2πrh).

If x – y = 13 and xy = 28, then find x² + y².