SOLUTION: Find all numbers for which the rational expression is undefined. (s^3-7s)/(s^2-81) The numbers for which the rational expression is undefined are__

SOLUTION: Find all numbers for which the rational expression is undefined. (s^3-7s)/(s^2-81) The numbers for which the rational expression is undefined are___. (Use a comma to separate a

Question 474833: Find all numbers for which the rational expression is undefined.
(s^3-7s)/(s^2-81)
The numbers for which the rational expression is undefined are___.
(Use a comma to separate answers.)
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
The expression is undefined when the denominator is zero and the numerator is nonzero (otherwise it is said to be "indeterminate").

We can set s^2 - 81 = 0, then s = 9 or -9.
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