Answer
$$3.02x^2-3.13x+8.31x^2+11.34-3.73x=11x^2-6x+11$$
Explanation
| $$ \begin{aligned}3.02x^2-3.13x+8.31x^2+11.34-3.73x& \xlongequal{ }3x^2-3x+8x^2+11.34-3x \xlongequal{ } \\[1 em] & \xlongequal{ }3x^2-3x+8x^2+11-3x \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}11x^2-6x+11\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{3x^2} \color{red}{-3x} + \color{blue}{8x^2} +11 \color{red}{-3x} = \color{blue}{11x^2} \color{red}{-6x} +11 $$ |
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