SOLUTION: x+6/x^2+x-20
What value or values of x are not allowed in this rational expression?
(If you find two solutions, separate them with a comma.)
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-> SOLUTION: x+6/x^2+x-20
What value or values of x are not allowed in this rational expression?
(If you find two solutions, separate them with a comma.)
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Question 1158891: x+6/x^2+x-20
What value or values of x are not allowed in this rational expression?
(If you find two solutions, separate them with a comma.) Found 2 solutions by ankor@dixie-net.com, solver91311:Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! x+6/x^2+x-20
What value or values of x are not allowed in this rational expression?
(If you find two solutions, separate them with a comma.)
:
Denominator cannot = 0, therefore
x^2 + x - 20 = 0
Factors to
(x+5)(x-4) = 0
x = -5
x = 4
-5, 4 values are not allowed in this expression
Take the denominator function and set it equal to zero.
Solve the quadratic.
The two values obtained are the two values that make the rational expression undefined because if either value is substituted for x, the denominator of the rational function becomes zero.
John
My calculator said it, I believe it, that settles it
