（急）计算(x²-y²/xy)²÷（x+y/y）²·（x/x-y）³如题

（急）计算(x²-y²/xy)²÷（x+y/y）²·（x/x-y）³如题
（急）计算(x²-y²/xy)²÷（x+y/y）²·（x/x-y）³
如题

（急）计算(x²-y²/xy)²÷（x+y/y）²·（x/x-y）³如题
(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)