$$ \begin{aligned}5p^2-3+2p^2-3p^3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-3p^3+7p^2-3\end{aligned} $$ | |
① | Combine like terms: $$ \color{blue}{5p^2} -3+ \color{blue}{2p^2} -3p^3 = -3p^3+ \color{blue}{7p^2} -3 $$ |