Question
Answer
$$-x^2+2x-2x^2-3x+4+x^2=-2x^2-x+4$$
Explanation
| $$ \begin{aligned}-x^2+2x-2x^2-3x+4+x^2& \xlongequal{ } -\cancel{x^2}+2x-2x^2-3x+4+ \cancel{x^2} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-2x^2-x+4\end{aligned} $$ | |
| ① | Combine like terms: $$ \, \color{blue}{ -\cancel{x^2}} \,+ \color{green}{2x} \color{orange}{-2x^2} \color{green}{-3x} +4+ \, \color{orange}{ \cancel{x^2}} \, = \color{orange}{-2x^2} \color{green}{-x} +4 $$ |
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