### Home > INT3 > Chapter 8 > Lesson 8.3.4 > Problem 8-144

8-144.

Shinna wants to factor *“Wait!”* she says.* “I think I can see a way to use the difference of squares factoring pattern!”*

Is Shinna’s expression a difference of squares? If so, what are the “squares”? If not, explain why.

Yes; it is the difference of the square

and the square . Help Shinna factor the expression

. Remember that one factor contains addition and the other subtraction.