Question
Answer
$$5\cdot10\sqrt{72}=300\sqrt{2}$$
Explanation
| $$ \begin{aligned}5\cdot10\sqrt{72}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}300\sqrt{2}\end{aligned} $$ | |
| ① | $$ 50 \sqrt{72} =
50 \sqrt{ 6 ^2 \cdot 2 } =
50 \sqrt{ 6 ^2 } \, \sqrt{ 2 } =
50 \cdot 6 \sqrt{ 2 } =
300 \sqrt{ 2 } $$ |
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