SOLUTION: Which numbers cannot be used in place of the variable in each rational expession? 2y+1/y^2-y-6 =

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Question 177023: Which numbers cannot be used in place of the variable in each rational expession?
2y+1/y^2-y-6
=
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Which numbers are not allowed in the denominator? The values of y that make the denominator = zero. So, set the denominator = to zero and solve for the values of y that satisfy the equation.
y%5E2-y-6+=+0 Factor the equation.
%28y%2B2%29%28y-3%29+=+0 Apply the zero product rule.
y%2B2+=+0 or y-3+=+0 so...
highlight%28y+=+-2%29 or highlight%28y+=+3%29 These are the "excluded" values of y.