Question
Answer
$$14x^2-5+9x-2x^2-10=12x^2+9x-15$$
Explanation
| $$ \begin{aligned}14x^2-5+9x-2x^2-10& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}12x^2+9x-15\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{14x^2} \color{red}{-5} +9x \color{blue}{-2x^2} \color{red}{-10} = \color{blue}{12x^2} +9x \color{red}{-15} $$ |
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