Question
Answer
$$-w^2+2wm-w\cdot2s^2-m^2+2s^2m-s^4=-s^4+2ms^2-2s^2w-m^2+2mw-w^2$$
Explanation
| $$ \begin{aligned}-w^2+2wm-w\cdot2s^2-m^2+2s^2m-s^4& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-s^4+2ms^2-2s^2w-m^2+2mw-w^2\end{aligned} $$ | |
| ① | Combine like terms: $$ -s^4+2ms^2-2s^2w-m^2+2mw-w^2 = -s^4+2ms^2-2s^2w-m^2+2mw-w^2 $$ |
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