Question
Answer
$$4\cdot(2-4\sqrt{5})=8-16\sqrt{5}$$
Explanation
| $$ \begin{aligned}4\cdot(2-4\sqrt{5})& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}8-16\sqrt{5}\end{aligned} $$ | |
| ① | $$ \color{blue}{ 4 } \cdot \left( 2- 4 \sqrt{5}\right) = \color{blue}{4} \cdot2+\color{blue}{4} \cdot- 4 \sqrt{5} = \\ = 8- 16 \sqrt{5} $$ |
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Simplify Radical Expression