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

Simplify (2.5p − 1.5q)² − (1.5p − 2.5q)²

Simplify (ab + bc)² − 2ab²c

Simplify (m² − n²m)² + 2m³n²

Using identities, evaluate 71²

Using identities, evaluate 99²

Using identities, evaluate 102²

Using identities, evaluate 998²

Using identities, evaluate (5.2)²

Using identities, evaluate 297 × 303

Using identities, evaluate 78 × 82

Using identities, evaluate 8.9²

Using identities, evaluate 1.05 × 9.5

Using a² − b² = (a + b) (a − b), find 51² − 49²

Using a² − b² = (a + b) (a − b), find  (1.02)² − (0.98)²

Using a² − b² = (a + b) (a − b), find 153² − 147²

Using a² − b² = (a + b) (a − b), find 12.1² − 7.9²

Using (x + a) (x + b) = x² + (a + b) x + ab, find 103 × 104

Using (x + a) (x + b) = x² + (a + b) x + ab, find 5.1 × 5.2

Using (x + a) (x + b) = x² + (a + b) x + ab, find 103 × 98

Using (x + a) (x + b) = x² + (a + b) x + ab, find 9.7 × 9.8