Question
Answer
$$c+a^2+(-c)=a^2$$
Explanation
| $$ \begin{aligned}c+a^2+(-c)& \xlongequal{ } \cancel{c}+a^2 -\cancel{c} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}a^2\end{aligned} $$ | |
| ① | Combine like terms: $$ \, \color{blue}{ \cancel{c}} \,+a^2 \, \color{blue}{ -\cancel{c}} \, = a^2 $$ |
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