约分x^2-3xy+2y^2/-4x^2y^2+x^3y+4xy^3
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约分x^2-3xy+2y^2/-4x^2y^2+x^3y+4xy^3
![约分x^2-3xy+2y^2/-4x^2y^2+x^3y+4xy^3](/uploads/image/z/16795668-12-8.jpg?t=%E7%BA%A6%E5%88%86x%5E2-3xy%2B2y%5E2%2F-4x%5E2y%5E2%2Bx%5E3y%2B4xy%5E3)
分子=x^2-3xy+2y^2=(x-y)(x-2y)
分母=-4x^2y^2+x^3y+4xy^3=xy(x^2-4xy+4y^2)=xy(x-2y)^2
所以,原式=[(x-y)(x-2y)]/[xy(x-2y)^2]=(x-y)/[xy(x-2y)]
分母=-4x^2y^2+x^3y+4xy^3=xy(x^2-4xy+4y^2)=xy(x-2y)^2
所以,原式=[(x-y)(x-2y)]/[xy(x-2y)^2]=(x-y)/[xy(x-2y)]
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