Question
Answer
$$-4x^2+9x^3+2x-6x^3+7x-2=3x^3-4x^2+9x-2$$
Explanation
| $$ \begin{aligned}-4x^2+9x^3+2x-6x^3+7x-2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3x^3-4x^2+9x-2\end{aligned} $$ | |
| ① | Combine like terms: $$ -4x^2+ \color{blue}{9x^3} + \color{red}{2x} \color{blue}{-6x^3} + \color{red}{7x} -2 = \color{blue}{3x^3} -4x^2+ \color{red}{9x} -2 $$ |
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