SOLUTION: Divide, and, if possible, simplify: sqrt 56ab^3 / sgrt 7a

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Question 201707: Divide, and, if possible, simplify:
sqrt 56ab^3 / sgrt 7a
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt 56ab^3 / sqrt 7a
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sqrt{ 56ab^3 / 7a }
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sqrt { 8b^3)
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sqrt{ 4 *2 *b^2 *b }
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2 b sqrt( 2b)
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check let b=1,,both answer and original = 2.828,,,,ok