| $$ \begin{aligned}\sqrt{3}^2+\sqrt{5}^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3+5 \xlongequal{ } \\[1 em] & \xlongequal{ }8\end{aligned} $$ | |
| ① | $$ \sqrt{3}^2 =
\sqrt{3} ^2 =
\lvert 3 \rvert =
3 $$$$ \sqrt{5}^2 =
\sqrt{5} ^2 =
\lvert 5 \rvert =
5 $$ |