题目

若f(x)=(x-1)4+4(x-1)3 +6(x-1)2 +4x-3，则f()的值为A.4                  B.4                   C.2               D. 答案：B  解析：f(x)=(x-1)4 +4(x-1)3 +6(x-1)2 +4(x-1)+1=(x-1+1)4=x4,∴ f()=()4=4,选B.

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