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