Question
Answer
$$x^2-100x^2-9=-99x^2-9$$
Explanation
| $$ \begin{aligned}x^2-100x^2-9& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-99x^2-9\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{x^2} \color{blue}{-100x^2} -9 = \color{blue}{-99x^2} -9 $$ |
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