Question
Answer
$$-(3+i)-i=-2i-3$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-(3+i)-i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-3-i-i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-2i-3\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left(3+i \right) = -3-i $$ |
| ② | Combine like terms: $$ -3 \color{blue}{-i} \color{blue}{-i} = \color{blue}{-2i} -3 $$ |
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Simplify Rational Expressions