Question
Answer
$$-11-10i-(-1+i)=-11i-10$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-11-10i-(-1+i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-11-10i+1-i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-11i-10\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( -1+i \right) = 1-i $$ |
| ② | Combine like terms: $$ \color{blue}{-11} \color{red}{-10i} + \color{blue}{1} \color{red}{-i} = \color{red}{-11i} \color{blue}{-10} $$ |
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