Question

Factoring by grouping.
a^2 + b^2 +2ab + 2a + 2b

Answer 1

i think the first step that you would want to do is rearrange this as :

a^2+2a+b^2+2ab+2b
and then we can write:

(a^2+2a)+(b^2+2ab+2b)
a(a+2)+b(b+a+2)
(a+b)(b+a+2)