Question

silly question
Why is x^2+4=0 x=+/-2i

Answer 1

LOL

Answer 2

I remember now haha

Answer 3

\[x=\sqrt4\]

Answer 4

That's almost right.

Answer 5

Squaring i gets you -1, so 2i will be -1*(+/-2)^2

Answer 6

negative sqrt which makes an imaginary number

Answer 7

thanks guys and gals

Answer 8

@across how it is almost right not right?

Answer 9

@pradipgr817, I don't understand your question. :P

Answer 10

@across I didn't got your comment "thats almost right"

Answer 11

I said that because @MathSofiya wrote \(x=\sqrt4\) when it should have been \(x=\pm\sqrt{-4}\).

Answer 12

ok