Question

Can someone help me please, I will Give you a medal and be your fan !!!!

Simplify:
(3a-4b)(a+b)

Answer 1

There isn't really much to go off of.

This is what I did.

(3a−4b)(a+b)
=(3a+−4b)(a+b)
=(3a)(a)+(3a)(b)+(−4b)(a)+(−4b)(b)
=3a2+3ab−4ab−4b^2
=3a2−ab−4b^2