### Home > PC > Chapter 3 > Lesson 3.2.3 > Problem 3-89

3-89.

Let . Evaluate each of the following, or state “impossible” and explain why. It may be helpful to first replace

*and*

*with their definitions.*

Examples:

This means you need to solve

.

3-89.

Let . Evaluate each of the following, or state “impossible” and explain why. It may be helpful to first replace

Examples:

This means you need to solve

.