Pulling on some LaTeX

Recently curious about formatting mathematical equations online, I did a little digging. There are plenty of sites, but this one is a quick introduction. I'm using it to attempt writing a problem from the 6th edition of Stewart's Calculus textbook.

$latex 2x^3+3x^2+7x+4 $

$ latex 2^{3^x}$

I've been thinking about putting up solutions to the problems I work from the textbook, but that will take much time I don't have. However, that's one reason why I've been looking into LaTeX.

Hmm, this LaTeX is not displaying properly.