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.