SOLUTION: please explain why -5,9 and -4 are not allowable replacements for x in the following problem. x-8/x+5 divided by x-9/x+4

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Question 166755: please explain why -5,9 and -4 are not allowable replacements for x in the following problem.
x-8/x+5 divided by x-9/x+4
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
please explain why -5,9 and -4 are not allowable replacements for x in the following problem.
x-8/x+5 divided by x-9/x+4
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Those 3 values would make a denominator zero. Dividing by zero is "undefined."