Question
Answer
$$7qr-q^2r^3+2q^2r^3-6qr=q^2r^3+qr$$
Explanation
| $$ \begin{aligned}7qr-q^2r^3+2q^2r^3-6qr& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}q^2r^3+qr\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{7qr} \color{red}{-q^2r^3} + \color{red}{2q^2r^3} \color{blue}{-6qr} = \color{red}{q^2r^3} + \color{blue}{qr} $$ |
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