Reference
Practice
Premium
Log In
English
English ✔
Español
日本語
简体中文
繁體中文
Fourth Power Rule
Reference
> Algebra: Imaginary Numbers
Description
The Fourth Power Rule states that:
\({i}^{4}={i}^{2}{i}^{2}=(-1)(-1)=1\)
Examples
\[{i}^{4}+2\]
1
Use
Fourth Power Rule
: \({i}^{4}={i}^{2}{i}^{2}=(-1)(-1)=1\).
\[1+2\]
2
Simplify.
\[3\]
Done
3