SOLUTION: I am having trouble with this Problem X+8 ________ X^2+4X-5 Determine the values of x where the expression is defined.

Algebra ->  Signed-numbers -> SOLUTION: I am having trouble with this Problem X+8 ________ X^2+4X-5 Determine the values of x where the expression is defined.      Log On


   



Question 144982: I am having trouble with this Problem
X+8
________
X^2+4X-5
Determine the values of x where the expression is defined.

Found 2 solutions by stanbon, vleith:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
X+8
________
X^2+4X-5
Determine the values of x where the expression is defined.
---------------
(x+8)/[(x+5)(x-1)]
Expression in undefined where the denominator is zero;
that is at x = -5 and at x = 1.
=======================
Cheers,
Stan H.

Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
This expression is defined for all x except where that value of x makes the denominator 0.
So factor the denominator
X%5E2%2B4X-5
%28x%2B5%29%28x-1%29
When x equal 1 or x equal -5, the denominator is 0. Anything divided by 0 is undefined.

All values except 1 and -5