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