Question
Answer
$$2a^2+5ab-6b^2-6a^2+8b^2-10ab=-4a^2-5ab+2b^2$$
Explanation
| $$ \begin{aligned}2a^2+5ab-6b^2-6a^2+8b^2-10ab& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-4a^2-5ab+2b^2\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{2a^2} + \color{red}{5ab} \color{green}{-6b^2} \color{blue}{-6a^2} + \color{green}{8b^2} \color{red}{-10ab} = \color{blue}{-4a^2} \color{red}{-5ab} + \color{green}{2b^2} $$ |
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