### Home > CCA2 > Chapter 5 > Lesson 5.2.1 > Problem 5-66

5-66.

Factor each expression completely. Homework Help ✎

*x*^{2}− 496

*x*^{2}+ 48*x**x*^{2}−*x*− 722

*x*^{3}− 8*x*

Notice that this is the difference of squares.

There are only 2 terms, so factor out the greatest common factor.

Find two numbers that multiply to −72 and add to −1.

Factor out the greatest common factor first, then see part (a).

2*x*(*x* + 2)(*x* − 2)