Answer
$$x^2+x-2-2x^2-9x-7=-x^2-8x-9$$
Explanation
| $$ \begin{aligned}x^2+x-2-2x^2-9x-7& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-x^2-8x-9\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{x^2} + \color{red}{x} \color{green}{-2} \color{blue}{-2x^2} \color{red}{-9x} \color{green}{-7} = \color{blue}{-x^2} \color{red}{-8x} \color{green}{-9} $$ |
This page was created using
Complex Expression calculator