Question
Answer
$$-\sqrt{72}=-6\sqrt{2}$$
Explanation
| $$ \begin{aligned}-\sqrt{72}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-6\sqrt{2}\end{aligned} $$ | |
| ① | $$ - \sqrt{72} =
- \sqrt{ 6 ^2 \cdot 2 } =
- \sqrt{ 6 ^2 } \, \sqrt{ 2 } =
- 6 \sqrt{ 2 }$$ |
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