Question
Answer
$$5-3i-(-1+2i)=-5i+6$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}5-3i-(-1+2i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}5-3i+1-2i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-5i+6\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( -1+2i \right) = 1-2i $$ |
| ② | Combine like terms: $$ \color{blue}{5} \color{red}{-3i} + \color{blue}{1} \color{red}{-2i} = \color{red}{-5i} + \color{blue}{6} $$ |
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