data/mathoid/39.mml
<math
xmlns="http://www.w3.org/1998/Math/MathML" display="block" alttext="left-parenthesis x plus y right-parenthesis Superscript n Baseline equals sigma-summation Underscript k equals 0 Overscript n Endscripts StartBinomialOrMatrix n Choose k EndBinomialOrMatrix x Superscript n minus k Baseline y Superscript k Baseline equals sigma-summation Underscript k equals 0 Overscript n Endscripts StartBinomialOrMatrix n Choose k EndBinomialOrMatrix x Superscript k Baseline y Superscript n minus k">
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<annotation encoding="application/x-tex">(x+y)^{n}=\sum _{k=0}^{n}{n \choose k}x^{n-k}y^{k}=\sum _{k=0}^{n}{n \choose k}x^{k}y^{n-k}</annotation>
</semantics>
</math>