Respuesta :

Wierdo101
1.
Simplify
b^2+4b+4

And To Get The Answer Combine Like Terms.

2.
Simplify
x^2-9

And To Get The Answer Combine Like Terms.

bcalle
The first one is a sum squared.
(b+2)^2
b^2 + 2b + 4

The second one is a sum and difference.
x^2 - 9