# SOLUTION: Find all the numbers for which the rational expression is undefined. Use comma to separate answers. n^3 - 7n / n^2 - 9 Thank you!!

Algebra ->  Algebra  -> Expressions-with-variables -> SOLUTION: Find all the numbers for which the rational expression is undefined. Use comma to separate answers. n^3 - 7n / n^2 - 9 Thank you!!      Log On

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 Question 322398: Find all the numbers for which the rational expression is undefined. Use comma to separate answers. n^3 - 7n / n^2 - 9 Thank you!!Answer by solver91311(16877)   (Show Source): You can put this solution on YOUR website! Set the denominator polynomial equal to zero and solve the resulting quadratic equation. The zeros of the denominator polynomial are the values that must be excluded from the domain of the rational function. John