Question
Answer
$$2\sqrt{3}(5\sqrt{7}-2\sqrt{3}+3\sqrt{6})=10\sqrt{21}-12+18\sqrt{2}$$
Explanation
| $$ \begin{aligned}2\sqrt{3}(5\sqrt{7}-2\sqrt{3}+3\sqrt{6})& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}10\sqrt{21}-12+18\sqrt{2}\end{aligned} $$ | |
| ① | $$ \color{blue}{ 2 \sqrt{3} } \cdot \left( 5 \sqrt{7}- 2 \sqrt{3} + 3 \sqrt{6}\right) = \color{blue}{ 2 \sqrt{3}} \cdot 5 \sqrt{7}+\color{blue}{ 2 \sqrt{3}} \cdot- 2 \sqrt{3}+\color{blue}{ 2 \sqrt{3}} \cdot 3 \sqrt{6} = \\ = 10 \sqrt{21}-12 + 18 \sqrt{2} $$ |
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