I'm suppose to evaluate the questions below but i dont really know what to do....the first one results to 0/0 and i tried to factor the down part. I got (x-8)(x^(2)+8x+64) for the denominator and i also got 3(x-1)(x-2) for the numerator. Please i dont know what to do from there... help me, i know this is suppose to be easy questions.

lim x-->2

(3x^(2)-9x+6)/(x^(3)-8)

lim x-->-2

((3x+7)^(-1)-1^(-1))/(x+2)