[tex]\Large\displaystyle\text{$\begin{gathered}\sf\boxed{\boxed{ \sf{ \sqrt{91 + \sqrt{76 + \sqrt{21 + \sqrt{14 + \sqrt{4} } }}}=10}}} \checkmark\end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ \sqrt{91 + \sqrt{76 + \sqrt{21 + \sqrt{14 + \underbrace{\sqrt{4}}_{2} } } } } } \end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ \sqrt{91 + \sqrt{76 + \sqrt{21 + \sqrt{14 + 2} } } } } \end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ \sqrt{91 + \sqrt{76 + \sqrt{21 + \underbrace{\sqrt{16}} _{4} } } } } \end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ \sqrt{91 + \sqrt{76 + \sqrt{21 + 4} } } } \end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ \sqrt{91 + \sqrt{76 + \underbrace{ \sqrt{25}} _{5} } } } \end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ \sqrt{91 + \sqrt{76 + 5} } } \end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ \sqrt{91 + \underbrace{\sqrt{81}} _{9} } } \end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ \sqrt{91 + 9} } \end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ \underbrace{ \sqrt{100}} _{10} } \end{gathered}$}[/tex]
[tex]\Large\displaystyle\text{$\begin{gathered} \sf{ 10 \: \checkmark } \end{gathered}$}[/tex]
