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