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