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