| $$ \begin{aligned}(11\sqrt{2})^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}242\end{aligned} $$ | |
| ① | $$ (11\sqrt{2})^2 =
11^{ 2 } \cdot \sqrt{2} ^ { 2 } =
11^{ 2 } \sqrt{2} ^2 =
11^{ 2 } \lvert 2 \rvert =
242 $$ |