| $$ \begin{aligned}6+2v^2-7v+2+6v& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2v^2-v+8\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{6} +2v^2 \color{red}{-7v} + \color{blue}{2} + \color{red}{6v} = 2v^2 \color{red}{-v} + \color{blue}{8} $$ |