the problem is p(x)= [^{3}√(x-6)]/√(x^{2}-x-30)

From what i know you have to make sure that the denominator isnt equal to zero that there is no negative in the square root sign. Those values that do make it equal to zero and a negative in the square root sign must be excluded from the domain. I dont have a clue on how to start? Im also wondering if the top cube root includes a value that must also be excluded from the domain?