4x^2-4xy-3y^2-4a+10y-3
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4x^2-4xy-3y^2-4a+10y-34x^2-4xy-3y^2-4a+10y-34x^2-4xy-3y^2-4a+10y-34x^2-4xy-3y^2-4x+10y-3=(2x-3y)(2x+
4x^2-4xy-3y^2-4a+10y-3
4x^2-4xy-3y^2-4a+10y-3
4x^2-4xy-3y^2-4a+10y-3
4x^2-4xy-3y^2-4x+10y-3
=(2x-3y)(2x+y)-4x+10y-3
=(2x-3y)(2x+y)+(2x+y)-6x+9y-3
=(2x+y)(2x-3y+1)-3(2x-3y+1)
=(2x-3y+1)(2x+y-3)
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
因式分解：4a^2(x-y)+9(y-x) -4x^2y^2+x^3y+4xy^3
因式分解：4a^2(x-y)+9(y-x) -4x^2y^2+x^3y+4xy^3
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)
当x-y=2xy时,求4x-3xy-4y/xy
XY(XY+3)+(XY+4)+4(X+Y+1)-(X+Y+2)
3(x^2y+xy)-4(xy-2x^2y)-(-xy)
（X-3xy+4xy-y）-[-2x-2（xy-3/2xy）-y]+6xy的过程
（-3x^y+2xy)-( )=4x^+xy
(x+y)(x+y+2xy)+(xy+1)(xy-1)(x+y)(x-y)+4(y-1)
3（x平方y+xy)-4(xy-2x平方y)-(xy)
约分：（1）-4x^2y^3/10xy^4(2)（x^2-4xy+4y^2)(y-x)/(2y-x)(x^2-y^2)
4x^2-4xy-3y^2-4a+10y-3