(2x-3x)^2(2x+3y)^2(2+xy)(xy-2)-(-2+xy)^2(a+3b)^2-(2a-3b)(3b+2a)
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x(x-y)2-(y-x)3
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
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化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
化简 3x(x^2-x-1)-(x+1)(3x^-x) X^3(x-y)+x(y-x)
因式分解3x^2(x-y)+6x(y-x)
3^x+2x=y,x
计算:x+2y/x-y+2x/y-x-3y/x-y
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
[(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y)
2X(2X-3Y)-3Y(X+Y)
(-2x y)^2-(3y-x)(-x-3y)
(x+2y)^2-(x+y)(3x-y)
[x(x^2y^2-xy)-y(x^2-x^3y)]/(2x^2y)
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
计算(x+y)(x+y)^2(-x-y)^3