SOLUTION: Simplify the expression. Check your answer by raising to the 3rd power. 3 square root -343x^21y^18

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Question 1104231: Simplify the expression. Check your answer by raising to the 3rd power.
3 square root -343x^21y^18
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
3 square root -343x^21y^18
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Do you mean cube root? Say cube root, not square root.
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root%283%2C-343%29+=+-7
Divide the exponents by 3
root%283%2Cx%5E21y%5E18%29+=+x%5E7y%5E6