Question
Answer
$$-5\sqrt{15}\cdot5\sqrt{12}=-150\sqrt{5}$$
Explanation
| $$ \begin{aligned}-5\sqrt{15}\cdot5\sqrt{12}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-150\sqrt{5}\end{aligned} $$ | |
| ① | $$ - 25 \sqrt{180} =
-25 \sqrt{ 6 ^2 \cdot 5 } =
-25 \sqrt{ 6 ^2 } \, \sqrt{ 5 } =
-25 \cdot 6 \sqrt{ 5 } =
-150 \sqrt{ 5 } $$ |
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