$$ \begin{aligned}-2\sqrt{8}\sqrt{6}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-8\sqrt{3}\end{aligned} $$ | |
① | $$ - 2 \sqrt{48} =
-2 \sqrt{ 4 ^2 \cdot 3 } =
-2 \sqrt{ 4 ^2 } \, \sqrt{ 3 } =
-2 \cdot 4 \sqrt{ 3 } =
-8 \sqrt{ 3 } $$ |