Question

Factorise (a+2b)^2 - a^2

Answer 1

(a+2b)²-a²

a²+4b²+4ab-a²

4b²+4ab

4b(b+a)

here is your answer

Answer 2

given :- (a + 2b)^2 - a^2

= (a)^2 + (2b)^2 + 2(a)(2b) - a^2

= a^2 + 4b^2 + 4ab - a^2

= 4b^2 + 4ab

= 4b(b + a)