SOLUTION: Find all number for which the rational expression is undefined y^2+5/y^2-y-30

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Question 1054878: Find all number for which the rational expression is undefined
y^2+5/y^2-y-30
Answer by ikleyn(52797) About Me  (Show Source):
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Find all number for which the rational expression is undefined
y^2+5/y^2-y-30
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The numbers for which the rational expression  %28y%5E2%2B5%29%2F%28y%5E2-y-30%29  is undefined

are the roots of the polynomial y%5E2-y-30 of the denominator.


y%5E2-y-30 = (x-6)*(x+5).


The roots are x=6 and x= -5.


Answer.  x=6 and x= -5.