Math doesn't work, need to add the scripts to the header (which requires an upgrade).

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Once added would like the html box to the right.

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 $$x^2 +2 = \sum x_2$$

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

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