Question
Answer
$$6-9x+x^2-5+4x-8x^2=-7x^2-5x+1$$
Explanation
| $$ \begin{aligned}6-9x+x^2-5+4x-8x^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-7x^2-5x+1\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{6} \color{red}{-9x} + \color{green}{x^2} \color{blue}{-5} + \color{red}{4x} \color{green}{-8x^2} = \color{green}{-7x^2} \color{red}{-5x} + \color{blue}{1} $$ |
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