ICSE ICSE Class 8 - CISCE Question Bank Solutions for Mathematics

Use the product (a + b) (a – b) = a² – b² to evaluate:
9.8 x 10.2

Use the product (a + b) (a – b) = a² – b² to evaluate:
7.7 x 8.3

Use the product (a + b) (a – b) = a² – b² to evaluate:
4.6 x 5.4

Evaluate: (6 – xy) (6 + xy)

Evaluate : `(7"x"+2/3"y")(7"x"-2/3"y")`

Evaluate : `("a"/(2"b")+(2"b")/"a")("a"/(2"b")-(2"b")/"a")`

Evaluate : `(3"x"-1/(2"y"))(3"x"+1/(2"y"))`

Evaluate: (2a + 3) (2a − 3) (4a² + 9)

Evaluate : (a + bc) (a − bc) (a² + b²c²)

Evaluate : (5x + 8y) (3x + 5y)

Evaluate : (7x + 15y) (5x − 4y)

Evaluate : (2a − 3b) (3a + 4b)

Evaluate : (9a − 7b) (3a − b)

Evaluate: (a² + 5) (a² − 3)

Evaluate: (3a² − 4b²) (8a² − 3b²)

Evaluate: (4x² − 5y²) (4x² + 5y²)

Evaluate: (m + 3) (m − 3) (m² + 9)

Evaluate: (3x + 4y) (3x − 4y) (9x² + 16y²)

Evaluate: (a + bc) (a − bc) (a² + b²c²)

Evaluate:

`2/3 - 4/5`