Question
Answer
$$9x^2+4x-5-11x^2=-2x^2+4x-5$$
Explanation
| $$ \begin{aligned}9x^2+4x-5-11x^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-2x^2+4x-5\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{9x^2} +4x-5 \color{blue}{-11x^2} = \color{blue}{-2x^2} +4x-5 $$ |
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