## bthemesandtricks Group Title What is the square root of -4 one year ago one year ago

1. RaphaelFilgueiras Group Title

2i

2. bthemesandtricks Group Title

okay how sure are u Raphael??

3. TheViper Group Title

Oh yes nice problem $$\sqrt{-4}=\sqrt{-1}\times\sqrt{4}=\sqrt{-1}\times2$$ Therefore we take $$\sqrt{-1}$$ as iota $$i$$ Therefore $$\sqrt{-4}=2i$$

4. JakeV8 Group Title

square root of -1 is "i" The definition of the square root of -1 is i, and i^2 ( "i squared") is negative 1.

5. bthemesandtricks Group Title

You are a genius @TheViper

6. JakeV8 Group Title

I'll second that...