Question
Answer
$$i^4+i^2+3=1-1+3$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}i^4+i^2+3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}1-1+3\end{aligned} $$ | |
| ① | $$ i^4 = i^2 \cdot i^2 =
( - 1) \cdot ( - 1) =
1 $$ |
| ② | $$ i^2 = -1 $$ |
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