Binomial theorem

Binomial theorem

Keywords: Binomial theorem

(a+b)n=(n0)anb0+(n1)an1b1+(n2)an2b2+...+(nn1)abn1+(nn)a0bn
(a+b)n=k=0n(nk)ankbk

Coefficients:

( n k ) = n ! k ! ( n k ) !