Asked by Swtpllypb

For what values of x is the following expression: 1/(x^2-25). How do you solve and determined the undefined value? Thanks!
Answered by Cool rich.
(x^2-25)=0
Get the square root of x^2-25
=(X-5)(X+5)
5 -5
Answered by bobpursley
the expression has to be an equation, equal to something. In the cool rich response, it is wrong. the expression X^2-25=0 cannot ever be here, as the expression has that in the denominator, and division by zero is never allowed.
Answered by drwls
I think your question left out an important word. Did you mean to write:
<<For what values of x is the following expression undefined?
1/(x^2-25).>>

The answer to THAT question is the two values of x for which the denominator is zero.
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