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