Question
Answer
$$4x+5x^2-1-7x+3+8x^2=13x^2-3x+2$$
Explanation
| $$ \begin{aligned}4x+5x^2-1-7x+3+8x^2& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}13x^2-3x+2\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{4x} + \color{red}{5x^2} \color{green}{-1} \color{blue}{-7x} + \color{green}{3} + \color{red}{8x^2} = \color{red}{13x^2} \color{blue}{-3x} + \color{green}{2} $$ |
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