SOLUTION: I am trying to find all numbers for which the rational expression is undefined t^3-8t/t^2-25 can you help?

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Question 320648: I am trying to find all numbers for which the rational expression is undefined t^3-8t/t^2-25 can you help?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
I am trying to find all numbers for which the rational expression is undefined t^3-8t/t^2-25 can you help?
We know that it will be undefined when the denominator = 0
:
Put the expression in the denominator = 0
x^2 - 25 = 0
add 25 to both sides
x^2 = 25
x = +/-sqrt%2825%29
therefore
x = +5
and
x = -5
:
These two values make the expression have a 0 denominator, hence, undefined