Question
Answer
$$5x^2+3+7x^2-1=12x^2+2$$
Explanation
| $$ \begin{aligned}5x^2+3+7x^2-1& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}12x^2+2\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{5x^2} + \color{red}{3} + \color{blue}{7x^2} \color{red}{-1} = \color{blue}{12x^2} + \color{red}{2} $$ |
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