化简分式(x-y)/x^2+y^2
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化简分式(x-y)/x^2+y^2化简分式(x-y)/x^2+y^2化简分式(x-y)/x^2+y^2原式=(x-y)/x²+y²-2xy+2xy=(x-y)/(x-y)²
化简分式(x-y)/x^2+y^2
化简分式(x-y)/x^2+y^2
化简分式(x-y)/x^2+y^2
原式=(x-y)/x²+y²-2xy+2xy
=(x-y)/(x-y)²+2xy
=1/2xy+x-y
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