Question
Answer
$$\sqrt{10}\cdot3\sqrt{5}=15\sqrt{2}$$
Explanation
| $$ \begin{aligned}\sqrt{10}\cdot3\sqrt{5}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}15\sqrt{2}\end{aligned} $$ | |
| ① | $$ 3 \sqrt{50} =
3 \sqrt{ 5 ^2 \cdot 2 } =
3 \sqrt{ 5 ^2 } \, \sqrt{ 2 } =
3 \cdot 5 \sqrt{ 2 } =
15 \sqrt{ 2 } $$ |
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