Question

Simplify i30

Answer 1

You mean 30i? As in the imaginary number?

\[30i = 30 * \sqrt{-1} = \sqrt{-900}\]

These are all the same thing and not any simpler... What did you mean?

Answer 2

It's either:
i
-i
1
-1
I can't remember the chart of multiples of 4 and I can't find my notes on it urrghhgh.

Answer 3

is it