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Mathematics

Compute:

(27)23÷(8116)14(27)^{\dfrac{2}{3}} ÷ \Big(\dfrac{81}{16}\Big)^{-\dfrac{1}{4}}

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Answer

(27)23÷(8116)14=(33)23÷(3424)14=(3)3×23÷(32)4×14=(3)2÷(32)1=(3)2÷(23)=(3)2×(32)=9×(32)=9×32=272=1312(27)^{\dfrac{2}{3}} ÷ \Big(\dfrac{81}{16}\Big)^{-\dfrac{1}{4}}\\[1em] = (3^3)^{\dfrac{2}{3}} ÷ \Big(\dfrac{3^4}{2^4}\Big)^{-\dfrac{1}{4}}\\[1em] = (3)^{3\times \dfrac{2}{3}} ÷ \Big(\dfrac{3}{2}\Big)^{-4\times\dfrac{1}{4}}\\[1em] = (3)^2 ÷ \Big(\dfrac{3}{2}\Big)^{-1}\\[1em] = (3)^2 ÷ \Big(\dfrac{2}{3}\Big)\\[1em] = (3)^2 \times \Big(\dfrac{3}{2}\Big)\\[1em] = 9 \times \Big(\dfrac{3}{2}\Big)\\[1em] = \dfrac{9 \times 3}{2}\\[1em] = \dfrac{27}{2}\\[1em] = 13\dfrac{1}{2}

(27)23÷(8116)14=1312(27)^{\dfrac{2}{3}} ÷ \Big(\dfrac{81}{16}\Big)^{-\dfrac{1}{4}} = 13\dfrac{1}{2}

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