This came up on the sage (FOSS alternative to Mathematica and freinds) mailing lists and I thought I'd post it here.
It always surprises me how difficult math on the Internet has turned out to be. Hopefully this can help...
It always surprises me how difficult math on the Internet has turned out to be. Hopefully this can help...
<math mode="display" xmlns="http://www.w3.org/1998/Math/MathML">
<mrow>
<mi>x</mi>
<mo>=</mo>
<mfrac>
<mrow>
<mo form="prefix">−<!-- − --></mo>
<mi>b</mi>
<mo>±<!-- ± --></mo>
<msqrt>
<msup>
<mi>b</mi>
<mn>2</mn>
</msup>
<mo>−<!-- − --></mo>
<mn>4</mn>
<mo>⁢<!-- ⁢ --></mo>
<mi>a</mi>
<mo>⁢<!-- ⁢ --></mo>
<mi>c</mi>
</msqrt>
</mrow>
<mrow>
<mn>2</mn>
<mo>⁢<!-- ⁢ --></mo>
<mi>a</mi>
</mrow>
</mfrac>
</mrow>
</math>