SOLUTION: hi, i am having a lot of difficulty with rationals and here is one question i cannot get. ³√-8mı² thanks!!

Algebra ->  Rational-functions -> SOLUTION: hi, i am having a lot of difficulty with rationals and here is one question i cannot get. ³√-8mı² thanks!!      Log On


   

Question 34124: hi, i am having a lot of difficulty with rationals and here is one question i cannot get.
³√-8mı²
thanks!!
Answer by sarah_adam(201) About Me  (Show Source):
You can put this solution on YOUR website!
cube root of %28-8m%5E12%29
%28-8m%5E12%29%5E%281%2F3%29
but - 8 = (-2)*(-2)*(-2) = %28-2%29%5E3
%28%28-2%29%5E3%28m%5E12%29%29%5E%281%2F3%29
%28-2%29m%5E4