计算[(x-y)^3]^m[(x-y)^m]^5=.M为正整数

计算：(y-x)^3(x-y)^m-(x-y)^m+2(y-x) 计算(x-y)^m(y-x)^2m+(y-x)^3m 计算：2/1-m-1/m-1.2x/x-y -y/y-x -y-2x/x-y.12/m²-9 -2/m-3 怎么计算(x-y)^m*(x-y)^（n+2）*(y-x)^3 计算(x-y-m+n)(x-y+m-n) 计算:(1).(2x-3y)/(y-x)-(x+2y)/(x-y) (2).[5m/(m-3)+2m/(m+3)]*(m^2-9)/m 计算[(x-y)^3]^m[(x-y)^m]^5=.M为正整数 计算 x(x-3y) 计算:(x+3y)(2x-y) 计算:(2x-3y)(x+y) 计算:(-x-2y) * (3x-y) 计算：(x+y)-3(x-2y). 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x 计算：(x+3y)(x-3y)-(x-3y) 计算(x+y)(x+y)^2(-x-y)^3 3x(x-y)+2y(x-y) 计算 计算 3x+4y/x-y+3y/y-x-4x/x-y 计算：x+2y/x-y+2x/y-x-3y/x-y