Question

Factorise (Class 8, algebraic identities)
1. 50a^2 + 98b^2 + 140ab

Answer 1

50a² + 98b² + 140ab

2 ( 25a² + 49b² + 70ab )

2 ( 5a + 7b ) ²

( or )

2 ( 5a + 7b ) ( 5a + 7b )

Answer 2

2(25a²+49b²+70ab)

=2(5a+7b)²