6x^2y(x-y)-2xy^2(x-y)+8xy(y-x)(x-y)^2-xy^2+x^2yb^2-c^2+a^2-2ab

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6x^2y(x-y)-2xy^2(x-y)+8xy(y-x)(x-y)^2-xy^2+x^2yb^2-c^2+a^2-2ab
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6x^2y(x-y)-2xy^2(x-y)+8xy(y-x)(x-y)^2-xy^2+x^2yb^2-c^2+a^2-2ab
6x^2y(x-y)-2xy^2(x-y)+8xy(y-x)
(x-y)^2-xy^2+x^2y
b^2-c^2+a^2-2ab

6x^2y(x-y)-2xy^2(x-y)+8xy(y-x)(x-y)^2-xy^2+x^2yb^2-c^2+a^2-2ab
1.=2xy(x-y)[3x-2y-4]
2.(x-y)^2-xy(y-x)=(x-y)(x-y+xy)
3.(a+b)^2-c^2=(a+b+c)(a+b-c)
这是作业,自己用点心比较好.

(-x-y)(x^2+xy+y^2) 化简x^-y^/x^-2xy+y^ 2*(x-y)²(y-x)(xy) 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) 3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少? X-Y/2X+2Y XY/X+Y² 因式分解：x×x-xy-2y×y-x-y 因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6 （x^2+xy/x-y)/（xy/x-y)计算 (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)答案应为-2x-x*x-3x， (x+y)/x /(x-(2xy-y^2)/x) 因式分解 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) (x-y)[(x+y)^2-xy]+(x-y)[(x-y)^2+xy] x根号x+x根号y/xy-y^2)-（x+根号xy+y/x根号x-y根号）y 代数 x^-y^/ x^-(y-z)^ 除以 x^+2xy+y^/(x-y)^-z^ 乘 x^+xy-xz/x^-xy 已知xy=-2,x-y=3,求（x+y)（x-y)-y^2+（x-y)^2-（6x^2y-2xy^2)÷2y x^2-xy-6y^2+3xy+y+2