x^3+5x^2y+x^2 化简

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 3x(x^2-x-1)-(x+1)(3x^-x) X^3(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 化简x-2y+3x-4x+5x-...+2001x-2002x,急. 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：(4x-3y)-[-(2x+y)+(x-y)]-5x (2x+y)²+(x+3y)(x-3y)-x(5x+8y)因式分解 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) 化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/【(x-y)/x】的负二次方 化简 x-[y-2x-(x-y) -9-4[2x-5(x+1)] 2x-3{y-[3x-(2y-x)]-2x}过程一步一步的列好x-[y-2x-(x-y) -9-4[2x-5(x+1)] 2x-3{y-[3x-(2y-x)]-2x} 化简(X-2Y)-(Y-3X)