-2y^3+(3xy^2-x^2y)-2(xy^2-y^3)
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-2y^3+(3xy^2-x^2y)-2(xy^2-y^3)
-2y^3+(3xy^2-x^2y)-2(xy^2-y^3)
-2y^3+(3xy^2-x^2y)-2(xy^2-y^3)
-2y^3+(3xy^2-x^2y)-2(xy^2-y^3)
原式=-2y^3+3xy^2-x^2y-2xy^2+2y^3
=xy^2-x^2y
X^Y-2XY^2+y^3
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
x^2-xy-6y^2+3xy+y+2
2x²y-3(2xy-xy)-xy
(x+y)(x-y)-(2xy+3y)平方平方是(2xy+3y)的
x*x+xy=3,xy+y*y=2,则x*x+2xy+y*y=________?
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
(x^2y-9y)/(xy+3y)
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思,是3x-2xy-3y/x-2xy-y
-xy^2(x+y)^3+x(x+y)^2因式分解
(xy^2-2xy+x)*y^3-y分之y^3+y^2
(xy^2-2xy+x)乘以y^3-y分之y^3+y^2
(x+3y)/(x^2+xy)-x+y计算题
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y