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Mathematics

Compute:

(243)25÷(32)25(243)^{\dfrac{2}{5}} ÷ (32)^{-\dfrac{2}{5}}

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Answer

(243)25÷(32)25=(35)25÷(25)25=(3)5×25÷(2)5×25=(3)2÷(2)2=(3)2×(12)2=(3)2×212=(9)×(4)=36(243)^{\dfrac{2}{5}} ÷ (32)^{-\dfrac{2}{5}}\\[1em] = (3^5)^{\dfrac{2}{5}} ÷ (2^5)^{-\dfrac{2}{5}}\\[1em] = (3)^{5\times\dfrac{2}{5}} ÷ (2)^{-5\times\dfrac{2}{5}}\\[1em] = (3)^{2} ÷ (2)^{-2}\\[1em] = (3)^{2} \times \Big(\dfrac{1}{2}\Big)^{-2}\\[1em] = (3)^{2} \times \dfrac{2}{1}^{2}\\[1em] = (9) \times (4)\\[1em] = 36

(243)25÷(32)25=36(243)^{\dfrac{2}{5}} ÷ (32)^{-\dfrac{2}{5}} = 36

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