$$ \begin{aligned}\sqrt{10}^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10\end{aligned} $$ | |
① | $$ \sqrt{10}^2 =
\sqrt{10} ^2 =
\lvert 10 \rvert =
10 $$ |