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