Question
Answer
$$5y^2-7y+13-13y^2-7y+6=-8y^2-14y+19$$
Explanation
| $$ \begin{aligned}5y^2-7y+13-13y^2-7y+6& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-8y^2-14y+19\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{5y^2} \color{red}{-7y} + \color{green}{13} \color{blue}{-13y^2} \color{red}{-7y} + \color{green}{6} = \color{blue}{-8y^2} \color{red}{-14y} + \color{green}{19} $$ |
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