SOLUTION: Question: cubed root of x squared=9 After cubing both sides, the 9 becomes 729 leaving the equation x squared=729 Please help solve for x Any help appreciated!! Thank you

Algebra ->  Radicals -> SOLUTION: Question: cubed root of x squared=9 After cubing both sides, the 9 becomes 729 leaving the equation x squared=729 Please help solve for x Any help appreciated!! Thank you      Log On


   

Question 37651: Question: cubed root of x squared=9
After cubing both sides, the 9 becomes 729
leaving the equation x squared=729
Please help solve for x
Any help appreciated!!
Thank you
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
cube root of x squared=9
x^(2/3)=9
Raise both sides to the (3/2) power to get:
x=9^(3/2)
x=[9^(1/2)]^3
x=3^3=27
Cheers,
Stan H.