已知x2-y2=xy(xy不等于0)则x/y-y/x=____
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已知x2-y2=xy(xy不等于0)则x/y-y/x=____
![已知x2-y2=xy(xy不等于0)则x/y-y/x=____](/uploads/image/z/18528976-64-6.jpg?t=%E5%B7%B2%E7%9F%A5x2-y2%3Dxy%EF%BC%88xy%E4%B8%8D%E7%AD%89%E4%BA%8E0%EF%BC%89%E5%88%99x%2Fy-y%2Fx%3D____)
x/y-y/x
=x²/xy-y²/xy
=(x²-y)/xy
=xy/xy
=1
=x²/xy-y²/xy
=(x²-y)/xy
=xy/xy
=1
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