Question

Find the product of (2a + 3b) (2a + 3b) using identities​

Answer 1

4a^2 + 12ab + 9b^2.

Explanation:

Use the identity (a + b)(a + b) = a^2 + 2ab + b^2 :

So

(2a + 3b)(2a + 3b)

= (2a)^2 + 2*(2a)(3b) + (3b)^2

= 4a^2 + 12ab + 9b^2.