Question
Answer
$$-4b^2+8b-4b^3+5b^2-8b=-4b^3+b^2$$
Explanation
| $$ \begin{aligned}-4b^2+8b-4b^3+5b^2-8b& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-4b^3+b^2\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-4b^2} + \, \color{red}{ \cancel{8b}} \,-4b^3+ \color{blue}{5b^2} \, \color{red}{ -\cancel{8b}} \, = -4b^3+ \color{blue}{b^2} $$ |
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