It's not like I write anything here ever.
But, anyway, this is a test of LaTeXMathML. If I did it right, then $ax^2 + bx + c = 0$ iff $$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$
Note: this works on my machine. Whether it works on yours depends on your browser, fonts, etc. In general, Internet Explorer sucks, although it does have some limited MathML support. Firefox (or Mozilla) is, of course, the preferred browser. You may need to install new fonts, as well.