计算:(y-x)^3(x-y)^m-(x-y)^m+2(y-x)
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[(x-y)^3]^m[(x-y)^m]^5=.
计算:(-x-2y) * (3x-y)
计算(x+y)(x+y)^2(-x-y)^3
已知x>y,m
关于x、y的方程组3x+2y=m+14x+y=m
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)+【-
3m(x-y)-2(y-x)²因式分解
m(x-y)+n(y-x)
(x+y)(m+n)2-(x+y)(m+n)2
若全集I={(x,y)|x,y∈R},集合M={(x,y)|(y-3)/(x-2)},N{(x,y)|y=x=1},则(