Question
Answer
$$\dfrac{2\sqrt{60}}{45}=\dfrac{4\sqrt{15}}{45}$$
Explanation
| $$ \begin{aligned}\frac{2\sqrt{60}}{45}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{4\sqrt{15}}{45}\end{aligned} $$ | |
| ① | $$ 2 \sqrt{60} =
2 \sqrt{ 2 ^2 \cdot 15 } =
2 \sqrt{ 2 ^2 } \, \sqrt{ 15 } =
2 \cdot 2 \sqrt{ 15 } =
4 \sqrt{ 15 } $$ |
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