(急)计算(x²-y²/xy)²÷(x+y/y)²·(x/x-y)³
(急)计算(x²-y²/xy)²÷(x+y/y)²·(x/x-y)³
如题
如题
数学人气:940 ℃时间:2019-08-19 11:41:47
优质解答
(x²-y²/xy)²÷(x+y/y)²·(x/x-y)³=[(x+y)²(x-y)²/x²y²]×[y²/(x+y)²]×[x³/(x-y)³]=(x-y)²/x²×x³/(x-y)³=x/(x-y)
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