Question
Answer
$$x^2-9x+4+2x^2-2x+1=3x^2-11x+5$$
Explanation
| $$ \begin{aligned}x^2-9x+4+2x^2-2x+1& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3x^2-11x+5\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{x^2} \color{red}{-9x} + \color{green}{4} + \color{blue}{2x^2} \color{red}{-2x} + \color{green}{1} = \color{blue}{3x^2} \color{red}{-11x} + \color{green}{5} $$ |
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