Question
Answer
$$2x^2+6x+3+3x^2+4x-4=5x^2+10x-1$$
Explanation
| $$ \begin{aligned}2x^2+6x+3+3x^2+4x-4& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5x^2+10x-1\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{2x^2} + \color{red}{6x} + \color{green}{3} + \color{blue}{3x^2} + \color{red}{4x} \color{green}{-4} = \color{blue}{5x^2} + \color{red}{10x} \color{green}{-1} $$ |
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