Question
Answer
$$-\sqrt{189}=-3\sqrt{21}$$
Explanation
| $$ \begin{aligned}-\sqrt{189}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-3\sqrt{21}\end{aligned} $$ | |
| ① | $$ - \sqrt{189} =
- \sqrt{ 3 ^2 \cdot 21 } =
- \sqrt{ 3 ^2 } \, \sqrt{ 21 } =
- 3 \sqrt{ 21 }$$ |
This page was created using
Simplify Radical Expression