化简分式 x^2-y^2分之1/2x^2+xy-1.5y^2

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化简分式x^2-y^2分之1/2x^2+xy-1.5y^2化简分式x^2-y^2分之1/2x^2+xy-1.5y^2化简分式x^2-y^2分之1/2x^2+xy-1.5y^2x^2-y^2分之1/2x

化简分式 x^2-y^2分之1/2x^2+xy-1.5y^2
化简分式 x^2-y^2分之1/2x^2+xy-1.5y^2

化简分式 x^2-y^2分之1/2x^2+xy-1.5y^2
x^2-y^2分之1/2x^2+xy-1.5y^2
=1/2x^2+xy-1.5y^2/(x^2-y^2)
=(x^2+2xy-3y^2)/[2(x-y)(x+y)]
=(x-y)(x+3y)/[2(x-y)(x+y)]
=(x+3y)/[2(x+y)]
=1/2+[y/(x+y)]