若(x-2)2005=ax5+bx4+cx3+dx2+ex+f,则a+b+c+d+e+f=_.

问题描述:

若(x-2)2005=ax5+bx4+cx3+dx2+ex+f,则a+b+c+d+e+f=______.

将x=1代入得:a+b+c+d+e+f=-1,
故答案为:-1