# Are you ready for HTML 5 with MathJax?

Is your web browser ready for HTML 5 served up with MathJax? See if the math that follows is reasonable.

The roots of the polynomial $$a x^2 + b x + c$$ are given, in fields of characteristic other than $$2$$, by the formula $x = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a} \ .$