Question

Simplify i^5

Answer 1

\[i^5=i\times i\times i\times i\times i\]\[\qquad=(i\times i)\times (i\times i)\times i\]\[\qquad=(-1)\times (-1)\times i\]\[\qquad=(-1\times -1)\times i\]\[\qquad=(1)\times i\]\[\quad=i\]

Answer 2

So two i's make a negative?

Answer 3

\[i=\sqrt {-1}\]\[i^2=-1\]

Answer 4

Ohhh i get ittt thanks ! :D