[2x-2y+3xy(x-y)]÷（x-y)

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/13 00:42:59

[2x-2y+3xy(x-y)]÷（x-y)
=[2(x-y)+3xy(x-y)]÷（x-y)
=[(2+3xy)(x-y)]÷（x-y)
=2+3xy

化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 急![(3x+y)²-3(3x-y)(x+y)-(x-3y)(x+3y)]÷(2xy) 已知xy=-2,x-y=3,求（x+y)（x-y)-y^2+（x-y)^2-（6x^2y-2xy^2)÷2y [x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y (x+y)(x-y)-(2xy+3y)平方 (x^2-xy)y÷y-x/xy怎么做? 1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y) (x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y) (2x-y)(2x+y)+(2x-y)(y-4x)+2y(y-3x)+2x^4y^2÷(xy)^2 计算：(x+y/x-y)÷(xy+x^2) [-(x-y)^2/xy]^-4*(y^2-xy/x)^3*(x^4/y^10)÷(xy-y^2/x)^-5=-y(y- [x(x^2 y^2-xy)-y(x^2-x^3y)]÷3x^2y