化简5(x+y)^2-2(x-y)^3-2(y-x)^3-2(x+y)^2
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化简5(x+y)^2-2(x-y)^3-2(y-x)^3-2(x+y)^2
化简5(x+y)^2-2(x-y)^3-2(y-x)^3-2(x+y)^2
化简5(x+y)^2-2(x-y)^3-2(y-x)^3-2(x+y)^2
原式=(5-2)(x+y)^2-(2-2)(x-y)^3
=3(x+y)^2
化简:5(x-y)+2(x+y)-3(x-y)
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
化简:[(x+2y)^2-(x+y)(3x-y)-5y^2]/2x
化简:3(x-y)²-7(x-y)+ 2(x-y)²+5(x-y)
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
整体去括号;化简[5(x-y)-3(x-y)-(x-y)+2(x-y)]-2(x-y)
整体去括号;[5(x-y)-3(x-y)-(x-y)+2(x-y)]-2(x-y)化简
化简y(x+y)+(x+y)(x-y)-x^2
化简3(x-y)-7(x--y)+2(y-x)
化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1
(x+y)-(x-y)^3÷(x-y)(x+y)×2y化简e ,
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
化简(X-2Y)-(Y-3X)
(2x-3y)-(5x-y)
(2X-3y)-(5x-y)
(2x-5y)(3x+y)
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+(x-3y)(x-5y)+(x-2y)(x-4y)