Question
Answer
$$10\cdot\dfrac{\sqrt{19}}{19}=\dfrac{10\sqrt{19}}{19}$$
Explanation
| $$ \begin{aligned}10 \cdot \frac{\sqrt{19}}{19}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{10\sqrt{19}}{19}\end{aligned} $$ | |
| ① | $$ \color{blue}{ 10 } \cdot \sqrt{19} = 10 \sqrt{19} $$$$ \color{blue}{ 1 } \cdot 19 = 19 $$ |
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