Question
Answer
$$-2-\dfrac{\sqrt{15}}{2}=\dfrac{-4-\sqrt{15}}{2}$$
Explanation
| $$ \begin{aligned}-2-\frac{\sqrt{15}}{2}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{-4-\sqrt{15}}{2}\end{aligned} $$ | |
| ① | $$ -2-\frac{\sqrt{15}}{2}
= -2 \cdot \color{blue}{\frac{ 2 }{ 2}} - \frac{\sqrt{15}}{2} \cdot \color{blue}{\frac{ 1 }{ 1}}
= \frac{-4-\sqrt{15}}{2} $$ |
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