化简-x∧3-xy∧2+ 2x∧2y/x∧3-y∧2x
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化简-x∧3-xy∧2+2x∧2y/x∧3-y∧2x化简-x∧3-xy∧2+2x∧2y/x∧3-y∧2x化简-x∧3-xy∧2+2x∧2y/x∧3-y∧2x(-x^3-xy^2+2x^2y)/(x^3
化简-x∧3-xy∧2+ 2x∧2y/x∧3-y∧2x
化简-x∧3-xy∧2+ 2x∧2y/x∧3-y∧2x
化简-x∧3-xy∧2+ 2x∧2y/x∧3-y∧2x
(-x^3-xy^2+2x^2y) / (x^3-y^2x)
=-x(x^2+y^2-2xy) / [-x(x^2-y^2)]
= (x-y)^2 / [(x+y)(x-y)]
= (x-y) / (x+y)
题目如果没错的话=-X(X-Y)^2/[X(X+Y)(X-Y)]=-(X-Y)/(X+Y)
不如截图题目过来，这么写看着就感觉别扭。-xy∧2 -y∧2x是一样还是不一样呢？
化简(-x³-xy²+ 2x²y)/(x³-y²x)
原式=-x(x²+y²-2xy)/[x(x²-y²)]=-x(x-y)²/[x(x+y)(x-y)]=-(x-y)/(x+y)
化简-x∧3-xy∧2+ 2x∧2y/x∧3-y∧2x
已知x+y=6,xy=-3,则x∧y+xy∧2=
化简x^-y^/x^-2xy+y^
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