### Home > CC1 > Chapter 6 > Lesson 6.2.1 > Problem 6-72

6-72.

Simplify each expression. Homework Help ✎

The image below shows your first step.

Refer to the Math Notes box below if you need more help.

Complete the circled areas first.

For parts (c) and (d), refer to the Math Notes box and parts (a) or (b).