2(x-3y)↑2 - 3(x-3y)↑3 - (3y-x)↑2 + (3y-x)↑3

来源：学生作业帮编辑：拍题作业网作业帮分类：数学作业时间：2024/05/18 04:03:25

2(x-3y)↑2 - 3(x-3y)↑3 - (3y-x)↑2 + (3y-x)↑3
=[2(x-3y)↑2- (3y-x)↑2]+[- 3(x-3y)↑3 +(3y-x)↑3](根据加法的交换律和结合律)
=[2(x-3y)↑2- (x-3y)↑2]+[3(3y-x)↑3 +(3y-x)↑3]
=(x-3y)↑2+4(3y-x)↑3或者=（x-3y)↑2-4(x-3y)↑3
合并同类项法则：把各项系数相加,字母和字母的指数不变.

[(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y) 化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方【x-3y][x+y]-[x-2y][x +2y]-[x-y 有这样一道题:"计算(2*x*x*x-3*x*x*y-2*x*y*y)-(x*x*x-2*x*y*y+y*y*y)+【- 计算(x+y)(x+y)^2(-x-y)^3 数学(x-y)^5*(y-x)^3*(x-y)^2 已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) (x-y)^2-(x-y)^3因式分解计算:(-x-2y) * (3x-y) (x+y)^2-3(x-y)因式分解 (2X-3y)-(5x-y)