Secondary School (English Medium) (5 to 8) कक्षा ७ - CBSE Question Bank Solutions

Find the value of the following expression, when x = -1:

x² + 2x + 1

Find the value of the following expression, when x = −1:

2x² − x − 2

If a = 2, b = −2, find the value of a² + b².

If a = 2, b = −2, find the value of a² + ab + b².

If a = 2, b = −2, find the value of a² − b².

When a = 0, b = −1, find the value of the given expression:

2a + 2b

When a = 0, b = −1, find the value of the given expression:

2a² + b² + 1

When a = 0, b = −1, find the value of the given expression:

2a² b + 2ab² + ab

When a = 0, b = −1, find the value of the given expression:

a² + ab + 2

Simplify the expression and find the value if x is equal to 2:

x + 7 + 4 (x - 5)

Simplify the expression and find the value if x is equal to 2:

3 (x + 2) + 5x - 7

Simplify the expression and find the value if x is equal to 2.

6x + 5 (x − 2)

Simplify the expression and find the value if x is equal to 2:

4 (2x - 1) + 3x + 11

Simplify this expression and find its value if x = 3, a = −1, b = −2.

3x - 5 - x + 9

Simplify this expression and find its value if x = 3, a = -1, b = -2.

2 - 8x + 4x + 4

Simplify this expression and find its value if x = 3, a = −1, b = −2.

3a + 5 - 8a + 1

Simplify this expression and find its value if x = 3, a = −1, b = −2.

10 - 3b - 4 - 5b

Simplify this expression and find its value if x = 3, a = −1, b = −2.

2a - 2b - 4 - 5 + a

If z = 10, find the value of z³ − 3 (z − 10).

If p = −10, find the value of p² − 2p − 100.