<math xmlns="http://www.w3.org/1998/Math/MathML" id="p1.1.m1.1" class="ltx_Math" alttext="{\displaystyle{\displaystyle x*=\pm\sqrt{\mu}}}" display="inline">
  <semantics id="p1.1.m1.1a">
    <mrow id="p1.1.m1.1b">
      <mi id="p1.1.m1.1.1" xref="p1.1.m1.1.1.cmml">x</mi>
      <mo id="p1.1.m1.1.2" xref="p1.1.m1.1.2.cmml">*</mo>
      <mo id="p1.1.m1.1.3" xref="p1.1.m1.1.3.cmml">=</mo>
      <mo id="p1.1.m1.1.4" xref="p1.1.m1.1.4.cmml">±</mo>
      <msqrt id="p1.1.m1.1.5" xref="p1.1.m1.1.5.cmml">
        <mi id="p1.1.m1.1.5.2" xref="p1.1.m1.1.5.2.cmml">μ</mi>
      </msqrt>
    </mrow>
    <annotation-xml encoding="MathML-Content" id="p1.1.m1.1c">
      <cerror id="p1.1.m1.1d">
        <csymbol cd="ambiguous" id="p1.1.m1.1e">fragments</csymbol>
        <csymbol cd="unknown" id="p1.1.m1.1.1.cmml" xref="p1.1.m1.1.1">x</csymbol>
        <times id="p1.1.m1.1.2.cmml" xref="p1.1.m1.1.2"/>
        <eq id="p1.1.m1.1.3.cmml" xref="p1.1.m1.1.3"/>
        <csymbol cd="latexml" id="p1.1.m1.1.4.cmml" xref="p1.1.m1.1.4">plus-or-minus</csymbol>
        <apply id="p1.1.m1.1.5.cmml" xref="p1.1.m1.1.5">
          <root id="p1.1.m1.1.5a.cmml" xref="p1.1.m1.1.5"/>
          <ci id="p1.1.m1.1.5.2.cmml" xref="p1.1.m1.1.5.2">𝜇</ci>
        </apply>
      </cerror>
    </annotation-xml>
    <annotation encoding="application/x-tex" id="p1.1.m1.1f">{\displaystyle{\displaystyle x*=\pm\sqrt{\mu}}}</annotation>
  </semantics>
</math>

<math class="mwe-math-element" xmlns="http://www.w3.org/1998/Math/MathML"><mrow data-mjx-texclass="ORD"><mstyle displaystyle="true" scriptlevel="0"><mi>x</mi><mo>*</mo><mo>=</mo><mo>&#x00B1;</mo><mrow data-mjx-texclass="ORD"><msqrt><mi>&#x03BC;</mi></msqrt></mrow></mstyle></mrow></math>