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

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

Using suitable identities, evaluate the following.

10.1 × 10.2

The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.

x² – 6x + 8

The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.

x² – 3x + 2

The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.

x² – 7x + 10

The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.

x² + 19x – 20

The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.

x² + 9x + 20

Length of one of the diagonals of a rectangle whose sides are 10 cm and 24 cm is ______.

Diagonals of a rectangle are ______.