You can put this solution on YOUR website! a^2 over b^2 divided by a over b^3
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(a^2/b^2) / (a/b^3)
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Invert the denominator and multiply:
= (a^2/b^2) * (b^3/a)
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= (a^2/a)(b^3/b^2)
Cancel where you can:
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= ab
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Cheers,
Stan H.