$$ \begin{aligned}2x^2-2x+3x^3+12x-22x& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}3x^3+2x^2-12x\end{aligned} $$ | |
① | Combine like terms: $$ 2x^2 \color{blue}{-2x} +3x^3+ \color{red}{12x} \color{red}{-22x} = 3x^3+2x^2 \color{red}{-12x} $$ |