Question
Answer
$$2\sqrt{5}(-\sqrt{3}+5\sqrt{2})=-2\sqrt{15}+10\sqrt{10}$$
Explanation
| $$ \begin{aligned}2\sqrt{5}(-\sqrt{3}+5\sqrt{2})& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-2\sqrt{15}+10\sqrt{10}\end{aligned} $$ | |
| ① | $$ \color{blue}{ 2 \sqrt{5} } \cdot \left( - \sqrt{3} + 5 \sqrt{2}\right) = \color{blue}{ 2 \sqrt{5}} \cdot- \sqrt{3}+\color{blue}{ 2 \sqrt{5}} \cdot 5 \sqrt{2} = \\ = - 2 \sqrt{15} + 10 \sqrt{10} $$ |
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