a1/n = n√a (the nth root of a)
am/n = (n√a)m = n√am
91/2 = √9 = 3
81/3 = 3√8 = 2
272/3 = (3√27)2 = 32 = 9
Method: Deal with the root (bottom of fraction) first, then the power (top).
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Simplify, leaving answers with positive indices:x1/2 × x1/2(y1/3)6a2/3 ÷ a1/3(8x3y6)1/3
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