$$ \begin{aligned}w^2+w^3-5w^2+11w& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}w^3-4w^2+11w\end{aligned} $$ | |
① | Combine like terms: $$ \color{blue}{w^2} +w^3 \color{blue}{-5w^2} +11w = w^3 \color{blue}{-4w^2} +11w $$ |