Question
Answer
$$4x^3+2x+x+2x^3+3x^2+2x+1=6x^3+3x^2+5x+1$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}4x^3+2x+x+2x^3+3x^2+2x+1& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4x^3+3x+2x^3+3x^2+2x+1 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}6x^3+3x^2+5x+1\end{aligned} $$ | |
| ① | Combine like terms: $$ 4x^3+ \color{blue}{2x} + \color{blue}{x} = 4x^3+ \color{blue}{3x} $$ |
| ② | Combine like terms: $$ \color{blue}{4x^3} + \color{red}{3x} + \color{blue}{2x^3} +3x^2+ \color{red}{2x} +1 = \color{blue}{6x^3} +3x^2+ \color{red}{5x} +1 $$ |
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