$$ \begin{aligned}m^3+8m+6m+4& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}m^3+14m+4\end{aligned} $$ | |
① | Combine like terms: $$ m^3+ \color{blue}{8m} + \color{blue}{6m} +4 = m^3+ \color{blue}{14m} +4 $$ |