SOLUTION: what is 3 inside the radical of 243x^8 ?

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Question 630621: what is 3 inside the radical of 243x^8 ?
Answer by dfrazzetto(283) About Me  (Show Source):
You can put this solution on YOUR website!
pull out the perfect cubes:
243 = 9 x 27, 27 is 3 cubed
x^8 = x^2(x^6), cube root of x^6 is x^2
answer is 3x^2(cube root of (9x^2))