### How to write Math equation On Blogger

The Math Equations in this post are generated by MathJax, it's so beautifully rendered and simple to configure, without installing any plugins or special fonts. Just one line in the template header, and type your TeX code  within double dollar signs.

When $$a \ne 0$$, there are two solutions to $$ax^2 + bx + c = 0$$ and they are $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$