Question
Answer
$$5a+6a^2+2a^0-3a^2-9a=3a^2-4a+2$$
Explanation
| $$ \begin{aligned}5a+6a^2+2a^0-3a^2-9a& \xlongequal{ }5a+6a^2+2-3a^2-9a \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3a^2-4a+2\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{5a} + \color{red}{6a^2} +2 \color{red}{-3a^2} \color{blue}{-9a} = \color{red}{3a^2} \color{blue}{-4a} +2 $$ |
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