已知实数a,b,c,满足a+b+c= - 2,则当x= - 1时,多项式ax^5+bx^3+cx-1的值是:
!!!!!
解:将x=-1带入ax^5+bx^3+cx-1,得
-a-b-c-1
=-(a+b+c+1)
=-(-2+1)
=1