$$ \begin{aligned}\sqrt{3}^4& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}9\end{aligned} $$ | |
① | $$ \sqrt{3}^4 =
\left( \sqrt{3} ^2 \right)^{ 2 } =
\lvert 3 \rvert ^{ 2 } =
9 $$ |