Question
Answer
$$x^2+y^2+xy+cx+cy+c^2=c^2+cx+cy+x^2+xy+y^2$$
Explanation
| $$ \begin{aligned}x^2+y^2+xy+cx+cy+c^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}c^2+cx+cy+x^2+xy+y^2\end{aligned} $$ | |
| ① | Combine like terms: $$ c^2+cx+cy+x^2+xy+y^2 = c^2+cx+cy+x^2+xy+y^2 $$ |
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