题目内容
试题答案
A.x5 B.x5-1 C.x5+1 D.(x-1)5-1
(x-1)5+5(x-1)4+10(x-1)3+10(x-1)2+5(x-1)等于( )
A.x5 B.x5-1 C.x5+1 D.(x-1)5-1