Answer
$$8+4i+8-4i=16$$
Explanation
| $$ \begin{aligned}8+4i+8-4i& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}16\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{8} + \, \color{red}{ \cancel{4i}} \,+ \color{blue}{8} \, \color{red}{ -\cancel{4i}} \, = \color{blue}{16} $$ |
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