Question

simplify i x i = ?

Answer 1

i^2

Answer 2

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

So \[i \times i = -1\]

Answer 3

lol you do (:

Answer 4

how about 100?