Question

maths factorization 9(b+2a)^2-4a^2

Answer 1

9(b+2a)^2 - 4a^2
(3b+ 6a)^2 - 2a^2
a^2- b^2= (a+b) (a-b)
= (3b+6a+2a)(3b+6a-2a)
= (3b+8a)(3b-4a)

Answer 2

Refer the above picture.