Math Directive Tests
====================

Test the ``math`` directive. A simple formula:

.. math:: \alpha > \beta

One with a horizontal line:

.. math::

   \frac{2 \pm \sqrt{7}}{3}


Styled version (blue, larger & centered):

.. class:: formula

.. math::

   \frac{2 \pm \sqrt{7}}{3}


This below should go in two lines:

.. math::

   (a + b)^2 = a^2 + 2ab + b^2

   (a - b)^2 = a^2 - 2ab + b^2
