= x^(1/2) y fourth root of 16x^4/x^3y^2 = (16x^4/(x^3 y^2) )^(1/4) = 2 x^(1/4) y^(-1/2) so we have: x^(1/2) y * 2 x^(1/4) y^(-1/2) = 2 x^(3/4) y^(1/2)
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