Question

I need help guys thanks so much

Answer 1

Answer: A & C

Step-by-step explanation:

$i=\sqrt{-1}$

$\sqrt{-1} *\sqrt{4} =\sqrt{-4}$

You can also simplify the above by taking the -4 out of the radical

It becomes 2 x $\sqrt{-1}$, which can be simplifed to C