数学计算:(x-y)^7/(y-x)^6+(-y-x)^3/(x+y)^2(PS.求详细过程!)
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数学计算:(x-y)^7/(y-x)^6+(-y-x)^3/(x+y)^2(PS.求详细过程!)
数学计算:(x-y)^7/(y-x)^6+(-y-x)^3/(x+y)^2(PS.求详细过程!)
数学计算:(x-y)^7/(y-x)^6+(-y-x)^3/(x+y)^2(PS.求详细过程!)
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数学计算:(x-y)^7/(y-x)^6+(-y-x)^3/(x+y)^2(PS.求详细过程!)
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