Question
Answer
$$-2-4-(10-10i)=10i-16$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-2-4-(10-10i)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-6-(10-10i) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-6-10+10i \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}10i-16\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-2} \color{blue}{-4} = \color{blue}{-6} $$ |
| ② | Remove the parentheses by changing the sign of each term within them. $$ - \left( 10-10i \right) = -10+10i $$ |
| ③ | Combine like terms: $$ \color{blue}{-6} \color{blue}{-10} +10i = 10i \color{blue}{-16} $$ |
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