Question
Answer
$$-2x^3-8x+1+5x^3+6x^2+9x+7=3x^3+6x^2+x+8$$
Explanation
| $$ \begin{aligned}-2x^3-8x+1+5x^3+6x^2+9x+7& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3x^3+6x^2+x+8\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-2x^3} \color{red}{-8x} + \color{green}{1} + \color{blue}{5x^3} +6x^2+ \color{red}{9x} + \color{green}{7} = \color{blue}{3x^3} +6x^2+ \color{red}{x} + \color{green}{8} $$ |
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