Answer
$$11b^2+2b^2-5b^3-3b^2=-5b^3+10b^2$$
Explanation
| $$ \begin{aligned}11b^2+2b^2-5b^3-3b^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-5b^3+10b^2\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{11b^2} + \color{red}{2b^2} -5b^3 \color{red}{-3b^2} = -5b^3+ \color{red}{10b^2} $$ |
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