You can put this solution on YOUR website! 16a^3y3 by radicand 3
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If you means "cube root of 16a^3y^3" proceed as follows:
cube root of 16 = cube root of (8*2) = 2cube root 2
cube root of a^3 = a
cube root of y^3 = y
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Answer: 2cube rt 2 a*y
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Cheers,
Stan H.