Question
Answer
$$14x^2-5+9x-2^2-10=14x^2+9x-19$$
Explanation
| $$ \begin{aligned}14x^2-5+9x-2^2-10& \xlongequal{ }14x^2-5+9x-4-10 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}14x^2+9x-19\end{aligned} $$ | |
| ① | Combine like terms: $$ 14x^2 \color{blue}{-5} +9x \color{red}{-4} \color{red}{-10} = 14x^2+9x \color{red}{-19} $$ |
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