Question

The middle term in the expansion of (1-2x+x^2)^n is

Answer 1

Answer:

(1 - 2x + x2)n. Solution: We have (1 - 2x + x2)n = [(1 -x)2]n = (1 - x)2n. Here 2n is an even integer =>((2n/2) + 1)th i.e. (n+1)th term will be the middle term.