Question
Answer
$$10x^2+4x-2-4x^2+7=6x^2+4x+5$$
Explanation
| $$ \begin{aligned}10x^2+4x-2-4x^2+7& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}6x^2+4x+5\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{10x^2} +4x \color{red}{-2} \color{blue}{-4x^2} + \color{red}{7} = \color{blue}{6x^2} +4x+ \color{red}{5} $$ |
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