Answer
$$w^3-2w^2-5+3w^2-11=w^3+w^2-16$$
Explanation
| $$ \begin{aligned}w^3-2w^2-5+3w^2-11& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}w^3+w^2-16\end{aligned} $$ | |
| ① | Combine like terms: $$ w^3 \color{blue}{-2w^2} \color{red}{-5} + \color{blue}{3w^2} \color{red}{-11} = w^3+ \color{blue}{w^2} \color{red}{-16} $$ |
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