$$ \begin{aligned}\frac{3\sqrt{35}+3\sqrt{15}+\sqrt{15}+3}{5-3}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{3\sqrt{35}+4\sqrt{15}+3}{2}\end{aligned} $$ | |
① | Simplify numerator and denominator |