SOLUTION: find all the numbers for which the rational expression is undefined. s^3-9s/s^2-64 please help me solve.

Question 263968: find all the numbers for which the rational expression is undefined.
s^3-9s/s^2-64
please help me solve.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
find all the numbers for which the rational expression is undefined.
s^3-9s/s^2-64
--------------
Undefined when the denominator is zero.
Solve s^2-64 = 0
Factor:
(s-8)(s+8) = 0
s = 8 or s = -8
---------------------
Undefined if s = 8 or s= -8
==================================
Cheers,
Stan H.
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