$$ \begin{aligned}17-3s+2s^2-5s^3+5& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-5s^3+2s^2-3s+22\end{aligned} $$ | |
① | Combine like terms: $$ \color{blue}{17} -3s+2s^2-5s^3+ \color{blue}{5} = -5s^3+2s^2-3s+ \color{blue}{22} $$ |