Question
Answer
$$-3x+12+9x^2+2x-18=9x^2-x-6$$
Explanation
| $$ \begin{aligned}-3x+12+9x^2+2x-18& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}9x^2-x-6\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-3x} + \color{red}{12} +9x^2+ \color{blue}{2x} \color{red}{-18} = 9x^2 \color{blue}{-x} \color{red}{-6} $$ |
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