With the IBM techexplorer Hypermedia Browser Internext Explorer Behaviour you can mix and match MathML and HTML elements. Here is a fragment of an equation b 2 - 4 a c b 2 that can be used to solve the quadratic a x 2 + b x + c = 0 . But do not forget the ever important compound interest formula P n = P 0 ( 1 + r k ) kn