Question
Answer
$$2x^2+7x-1+7+3x^2=5x^2+7x+6$$
Explanation
| $$ \begin{aligned}2x^2+7x-1+7+3x^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5x^2+7x+6\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{2x^2} +7x \color{red}{-1} + \color{red}{7} + \color{blue}{3x^2} = \color{blue}{5x^2} +7x+ \color{red}{6} $$ |
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