Question

I am trying to figure out the multinomial theorem, and I think I'm understanding the first part of the formula, but I'm not sure what the second part stands for.

http://upload.wikimedia.org/math/0/7/a/07a735044c1818a9944fd747e78bc02a.png

I condsider the sum of all the terms as the first part, but then there's the product of (?)

Answer 1

\[\prod_{ }^{ }{x^{k_t}_t}\]

Answer 2

oh nvm, I got it :)