SOLUTION: explain why (-8)1/2 is not equal -(8)1/2, but (-27)1/3 is equal -(27)1/3

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Question 849757: explain why (-8)1/2 is not equal -(8)1/2, but (-27)1/3 is equal -(27)1/3
Found 3 solutions by stanbon, richwmiller, MathTherapy:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
explain why (-8)1/2 is not equal -(8)1/2, but (-27)1/3 is equal -(27)1/3
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But, (-8)1/2 IS EQUAL to -(8)1/2
They are both equal to -16
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Cheers,
Stan H.
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Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Who said they aren't equal?

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

explain why (-8)1/2 is not equal -(8)1/2, but (-27)1/3 is equal -(27)1/3


%28-+8%29%5E%281%2F2%29 -----> 2i%2Asqrt%282%29

-+%288%29%5E%281%2F2%29 -----> -+2sqrt%282%29

You can do the check!! 



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