Question
Answer
$$4x^2-9x-5+7x=4x^2-2x-5$$
Explanation
| $$ \begin{aligned}4x^2-9x-5+7x& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4x^2-2x-5\end{aligned} $$ | |
| ① | Combine like terms: $$ 4x^2 \color{blue}{-9x} -5+ \color{blue}{7x} = 4x^2 \color{blue}{-2x} -5 $$ |
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