### Home > CCA2 > Chapter 3 > Lesson 3.2.3 > Problem 3-91

3-91.

For each rational expression below, state any values of the variables that would make the denominator zero. Then complete each part.

Use the fact that

to rewrite . Then look for “ones” and simplify. Does anything factor out?

Use the strategy you used in part (a) to simplify the expression

. Does anything factor out?