We can use the msqrt and mroot elements to create square roots and mth roots in MathML.
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The square root of 3 is
<math>
<msqrt>
<mn>3</mn>
</msqrt>
</math>.
The cubed root of 2 is
<math>
<mroot>
<mn>2</mn>
<mn>3</mn>
</mroot>
</math>.
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