Question
Answer
$$12ax^2+6ax+x^2-x^2=12ax^2+6ax$$
Explanation
| $$ \begin{aligned}12ax^2+6ax+x^2-x^2& \xlongequal{ }12ax^2+6ax+ \cancel{x^2} -\cancel{x^2} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}12ax^2+6ax\end{aligned} $$ | |
| ① | Combine like terms: $$ 12ax^2+6ax+ \, \color{blue}{ \cancel{x^2}} \, \, \color{blue}{ -\cancel{x^2}} \, = 12ax^2+6ax $$ |
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