Secondary School (English Medium) (5 to 8) इयत्ता ८ - CBSE Question Bank Solutions for Mathematics

Find the value of a, if 8a = 35² – 27² 

Find the value of a, if 9a = 76² – 67²

Find the value of a, if pqa = (3p + q)² – (3p – q)²

Find the value of a, if pq²a = (4pq + 3q)² – (4pq – 3q)² 

Find the value of `(6.25 xx 6.25 - 1.75 xx 1.75)/(4.5)`

Find the value of `(198 xx 198 - 102 xx 102)/96`

The product of two expressions is x⁵ + x³ + x. If one of them is x² + x + 1, find the other.

Use the Identity (x + a) (x + b) = x² + (a + b)x + ab to find the following:

95 × 103

Diagonals of a rhombus are equal and perpendicular to each other.

A rhombus can be constructed uniquely if both diagonals are given.

The diagonals of a rhombus are 8 cm and 15 cm. Find its side.

In rhombus BEAM, find ∠AME and ∠AEM.

(x + a)(x + b) = x² + (a + b)x + ______.

x² + (a + b)x + ab = (a + b)(x + ab)

Multiply the following:  

(x² – 5x + 6), (2x + 7)

Using suitable identities, evaluate the following.

104 × 97

Using suitable identities, evaluate the following.

101 × 103

Using suitable identities, evaluate the following.

98 × 103