| $$ \begin{aligned}\frac{1}{2}\sqrt{24}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\sqrt{6}\end{aligned} $$ | |
| ① | $$ \frac{ 1 }{ 2 } \sqrt{ 24 } =
\frac{ 1 }{ 2 } \sqrt{ 2 ^2 \cdot 6 } =
\frac{ 1 }{ 2 } \sqrt{ 2 ^2 } \, \sqrt{ 6 } =
\frac{ 1 }{ 2 } \cdot 2 \sqrt{ 6 } =
1 \sqrt{ 6 } $$ |