I think (n^2 + 2n + 2)(n^2 + 2n + 3)..........(n^2 + 4n+4) is not a polynomial, because it can't be put into the form an^k+bn^(k-1)+cn^(k-2)+... w since you can't express all the terms in terms of n if it's unknown.

blackjack

flooble's webmaster puzzle