### Home > AC > Chapter 10 > Lesson 10.1.1 > Problem 10-10

10-10.

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. For the denominator to equal zero

must equal zero. Use the strategy you used in part (a) to simplify the expression

. What values of

would make the denominator zero?Rewrite the expression, as shown below, and look for factors which simplify to one.