Question
Answer
$$\sqrt{5}\cdot(5-\sqrt{6})=5\sqrt{5}-\sqrt{30}$$
Explanation
| $$ \begin{aligned}\sqrt{5}\cdot(5-\sqrt{6})& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5\sqrt{5}-\sqrt{30}\end{aligned} $$ | |
| ① | $$ \color{blue}{ \sqrt{5} } \cdot \left( 5- \sqrt{6}\right) = \color{blue}{ \sqrt{5}} \cdot5+\color{blue}{ \sqrt{5}} \cdot- \sqrt{6} = \\ = 5 \sqrt{5}- \sqrt{30} $$ |
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