Question
Answer
$$-m^2+6-4m^2+7m+2=-5m^2+7m+8$$
Explanation
| $$ \begin{aligned}-m^2+6-4m^2+7m+2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-5m^2+7m+8\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-m^2} + \color{red}{6} \color{blue}{-4m^2} +7m+ \color{red}{2} = \color{blue}{-5m^2} +7m+ \color{red}{8} $$ |
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