Question
Answer
$$x^2-4x-10+x^2-9x+3=2x^2-13x-7$$
Explanation
| $$ \begin{aligned}x^2-4x-10+x^2-9x+3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}2x^2-13x-7\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{x^2} \color{red}{-4x} \color{green}{-10} + \color{blue}{x^2} \color{red}{-9x} + \color{green}{3} = \color{blue}{2x^2} \color{red}{-13x} \color{green}{-7} $$ |
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