Question
Answer
$$3\sqrt{3}(2\sqrt{7}-5\sqrt{2})=6\sqrt{21}-15\sqrt{6}$$
Explanation
| $$ \begin{aligned}3\sqrt{3}(2\sqrt{7}-5\sqrt{2})& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}6\sqrt{21}-15\sqrt{6}\end{aligned} $$ | |
| ① | $$ \color{blue}{ 3 \sqrt{3} } \cdot \left( 2 \sqrt{7}- 5 \sqrt{2}\right) = \color{blue}{ 3 \sqrt{3}} \cdot 2 \sqrt{7}+\color{blue}{ 3 \sqrt{3}} \cdot- 5 \sqrt{2} = \\ = 6 \sqrt{21}- 15 \sqrt{6} $$ |
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