Name: Anonymous 2011-11-06 13:12
Any language that allows shit like this should be outlawed.
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply><in/>
<ci>x</ci>
<set>
<apply><divide/>
<apply><plus/> <!-- upper root -->
<apply><minus/>
<ci>b</ci>
</apply>
<apply><root/>
<apply><minus/>
<apply><power/>
<ci>b</ci>
<cn>2</cn>
</apply>
<apply><times/>
<cn>4</cn>
<ci>a</ci>
<ci>c</ci>
</apply>
</apply>
</apply>
</apply>
<apply><times/>
<cn>2</cn>
<ci>a</ci>
</apply>
</apply>
<apply><divide/>
<apply><minus/> <!-- lower root -->
<apply><minus/>
<ci>b</ci>
</apply>
<apply><root/>
<apply><minus/>
<apply><power/>
<ci>b</ci>
<cn>2</cn>
</apply>
<apply><times/>
<cn>4</cn>
<ci>a</ci>
<ci>c</ci>
</apply>
</apply>
</apply>
</apply>
<apply><times/>
<cn>2</cn>
<ci>a</ci>
</apply>
</apply>
</set>
</apply>
</math>