SOLUTION: Find all numbers for which the rational expression is undefined. Use commas to separate answers. q(3 power)-5q divided by q (squared)-81

Question 428008: Find all numbers for which the rational expression is undefined. Use commas to separate answers.
q(3 power)-5q divided by q (squared)-81
Answer by John10(297) (Show Source): You can put this solution on YOUR website!
Set the denominator to be zero to find the restricted values:
q^2 - 81 =0
(q -9)(q +9 )= 0
q -9 = 0 or q +9 =0
q = 9 or q = -9
These values are restricted because they make the rational expression undefined.
Hope it will help you! John10
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