이항정리(r2판 Blame)

		r2
r2 Hqptl	1	[[분류:정리]]
r2 Hqptl	2	[math((a+b)^n=\displaystyle\sum_{k=0}^n\begin{pmatrix} n \\ k \end{pmatrix}a^{n-k}b^k)]