x^2-y^2分之x+x^2-2xy+y^2分之y 化简
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x^2-y^2分之x+x^2-2xy+y^2分之y化简x^2-y^2分之x+x^2-2xy+y^2分之y化简x^2-y^2分之x+x^2-2xy+y^2分之y化简x/(x²-y²)
x^2-y^2分之x+x^2-2xy+y^2分之y 化简
x^2-y^2分之x+x^2-2xy+y^2分之y 化简
x^2-y^2分之x+x^2-2xy+y^2分之y 化简
x/(x²-y²)+y/(x²-2xy+y²)
=x/(x+y)(x-y)+y/(x-y)²
=[x(x-y)+y(x+y)]/(x+y)(x-y)²
=(x²+y²)/(x+y)(x-y)²
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(xy-x^2)除以xy分之x-y
xy分之x^2-y^2除以(x-y)
y平方-2y+1分之xy-x-y-1
x^2-y^2分之x+x^2-2xy+y^2分之y 化简
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