(2x-3y)^2-(4y-3x)(3x+4y)
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(2x-3y)^2-(4y-3x)(3x+4y)(2x-3y)^2-(4y-3x)(3x+4y)(2x-3y)^2-(4y-3x)(3x+4y)(2x-3y)^2-(4y-3x)(3x+4y)=4x^
(2x-3y)^2-(4y-3x)(3x+4y)
(2x-3y)^2-(4y-3x)(3x+4y)
(2x-3y)^2-(4y-3x)(3x+4y)
(2x-3y)^2-(4y-3x)(3x+4y)
=4x^2-12xy+9y^2-16y^2+9x^2
=13x^2-12xy-7y^2
x(x-y)2-(y-x)3
(x-y) (x-2y)+(x+2y) (x-3y)-2(x-3y) (x-4y)=
(x+3y-4)(2x-y)
计算（2x-3y)(x+4y)-(3x+y)(x-2y)（2x-3y)(x+4y)-(3x+y)(x-2y)
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+（x-3y)(x-5y)+(x-2y)(x-4y)
[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
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x²
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
[(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y)
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)(y+3x)-2(4x-3y)(4x+3y)
(2x-y)(2x+y)-2(3x-4y)(4y+3x)
(x-3y)(y+2x)-(4y-3x)(3x+4y)计算
5/4(x+y)(-x-y)^3*[-4/3(x-y)]*[-3/5(y-x)^2]