SOLUTION: Find all values of the variable x for which the rational expression is undefined. 4x+15 / x^2+1x-20 The expression is undefined when x =

SOLUTION: Find all values of the variable x for which the rational expression is undefined. 4x+15 / x^2+1x-20 The expression is undefined when x =

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Question 1158949: Find all values of the variable x for which the rational expression is undefined.
4x+15
/
x^2+1x-20
The expression is undefined when x =
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!

--------------undefined at 4, and at -5.
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