Question
Answer
$$-2-x^2-6x^2=-7x^2-2$$
Explanation
| $$ \begin{aligned}-2-x^2-6x^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-7x^2-2\end{aligned} $$ | |
| ① | Combine like terms: $$ -2 \color{blue}{-x^2} \color{blue}{-6x^2} = \color{blue}{-7x^2} -2 $$ |
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