Question
Answer
$$\sqrt{5}\cdot(3+\sqrt{3})=3\sqrt{5}+\sqrt{15}$$
Explanation
| $$ \begin{aligned}\sqrt{5}\cdot(3+\sqrt{3})& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3\sqrt{5}+\sqrt{15}\end{aligned} $$ | |
| ① | $$ \color{blue}{ \sqrt{5} } \cdot \left( 3 + \sqrt{3}\right) = \color{blue}{ \sqrt{5}} \cdot3+\color{blue}{ \sqrt{5}} \cdot \sqrt{3} = \\ = 3 \sqrt{5} + \sqrt{15} $$ |
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