Question

Find the 3rd term of (x-1)^6

Answer 1

expand using Binomial
third term is 15x^4

Answer 2

how do you expand it?

Answer 3

@matricked

Answer 4

do u know binomial theorem

Answer 5

use
(a-1)^n =C(n,0)a^n -C(n,1)a^(n-1)+C(n,2)a^(n-2) -C(n,3)a^(n-3)............. C(n,n)

the signs are alternatively +ve and -ve

Answer 6

ah i see, thank you very much :] @matricked

Answer 7

welcome dear