### Home > CCA2 > Chapter 12 > Lesson 12.2.2 > Problem 12-117

12-117.

Simplify each expression. Homework Help ✎

Use a generic rectangle and diamond to factor the numerator

and denominator. Then simplify using Giant Ones.

The expression in the numerator is a difference of cubes.

See the Math Notes box in Lesson 8.3.3 for the formula.

When factoring the denominator,start by factoring out the common factor, *x*.