Binomial Theorem (Step-by-Step)
Binomial Theorem (Step-by-Step)
The binomial theorem says that for positive integer n, =
, where . This widely useful result is illustrated here through termwise expansion.
n
(x+y)
n
∑
k=0
n |
k |
k
x
n-k
y
=
n |
k |
n!
k!(n-k)!