2x + ab
<math xmlns="http://www.w3.org/1998/Math/MathML">
<apply>
<csymbol cd="arith1">plus</csymbol>
<apply>
<csymbol cd="arith1">times</csymbol>
<cn>2</cn>
<ci>x</ci>
</apply>
<apply>
<csymbol cd="arith1">times</csymbol>
<ci>a</ci>
<ci>b</ci>
</apply>
</apply>
</math>
Author: Design Science, Inc. (E. Cannon, E. Tabacman, R.Miner)