SOLUTION: Find all numbers for which the rational expression is undefined. (p^3-7p)/(p^2-9)

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Question 564628: Find all numbers for which the rational expression is undefined.
(p^3-7p)/(p^2-9)
Answer by ad_alta(240) About Me  (Show Source):
You can put this solution on YOUR website!
We need to make sure the denominator is nonzero. This happens when p=3,-3. These are all the numbers for which the expression is undefined, since the numerator is well defined for all reals.