题目内容
(1)(x-y)2×(x-y)3×(y-x)2×(y-x)3
(2)(a-b-c)×(b+c-a)2×(c-a+b)2
(3)(-x)2×(-x)3+2x×(-x)4-(-x)×x4
(4)x×xm-1+x2×xm-2-3×x3×xm-3
(1)+(-1)3+¸|-3|
(2)(-27)-15´(-9)20¸(-3)-7
(3)
(4)[(x+y)2n]4(-x-y)2n+1(n是正整数)
(1)|-17|+|-3|-|-2| (2)|16|´¸|-0.4|