What is the coefficient of the last term in the binomial expansion of (x + 1)9? 0 1 9 10
Accepted Solution
A:
The first and last terms have coefficients of 1. The coefficient of the n-th term is C(9, n-1) = 9!/((n-1)!(10-n)!) for n=1 to 10.The appropriate choice is ...... 1