4xy^2-4x^2y-y^3
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4xy^2-4x^2y-y^3
4xy^2-4x^2y-y^3
4xy^2-4x^2y-y^3
4xy^2-4x^2y-y^3
=-y(4x^2-4xy+y^2)
=-y(2x-y)^2
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
化简2(x²y+xy)-3(x²y-xy)-4x²y
xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2)
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
3(x^2y+xy)-4(xy-2x^2y)-(-xy)
当x-y=2xy时,求4x-3xy-4y/xy
XY(XY+3)+(XY+4)+4(X+Y+1)-(X+Y+2)
(-3x^y+2xy)-( )=4x^+xy
3(x平方y+xy)-4(xy-2x平方y)-(xy)
(x+y)(x+y+2xy)+(xy+1)(xy-1)(x+y)(x-y)+4(y-1)
化简:2x²y+{2xy-[3x²y-2(-3x²y+2xy)]-4xy}化简:2x²y+{2xy-[3x²y-2(-3x²y+2xy)]-4xy}
x²-y²+5x+3y+4(x+y-2xy)(x+y-z)+(xy-1)²
已知x-y=4xy,求2x+3xy-2y/x-2xy-y的值
x-y=4xy,试求2x+3xy-2y/x-2xy-y