Question

1. Expand the following:
(1) (3a + 5b)2​

Answer 1

Answer:

Using the identity (a+b) ^2 = a^2 +b^2 + 2ab

(3a)^2 +(5b)^2 + 2* 3a *5b

9a^2 + 25b^2 + 30ab

This is the answer