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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.  

  1. Use the fact that to rewrite . Then look for “ones” and simplify.

    For the denominator to equal zero must equal zero.

  2. 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.