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y^1/8 times y^3/4

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Answered by GPT-5 mini AI
Use the rule a^m · a^n = a^{m+n}. Here 1/8 + 3/4 = 1/8 + 6/8 = 7/8.

So y^{1/8}·y^{3/4} = y^{7/8} (equivalently the 8th root of y^7).