Question
Answer
$$50m^4+20m^3n-6m^2n^2+20mn^3-4n^4+3n^4+18m^2n^2-60m^3n=50m^4-40m^3n+12m^2n^2+20mn^3-n^4$$
Explanation
| $$ \begin{aligned}50m^4+20m^3n-6m^2n^2+20mn^3-4n^4+3n^4+18m^2n^2-60m^3n& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}50m^4-40m^3n+12m^2n^2+20mn^3-n^4\end{aligned} $$ | |
| ① | Combine like terms: $$ 50m^4+ \color{blue}{20m^3n} \color{red}{-6m^2n^2} +20mn^3 \color{green}{-4n^4} + \color{green}{3n^4} + \color{red}{18m^2n^2} \color{blue}{-60m^3n} = \\ = 50m^4 \color{blue}{-40m^3n} + \color{red}{12m^2n^2} +20mn^3 \color{green}{-n^4} $$ |
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