Math Question

[Keylia]

I was wondering what imaginary numbers are. None of my classes in high school or college ever got around to teaching what they are. I looked it up in the dictionary but it just said "A complex number in which the imaginary part is not zero". Can someone explain this to me?

[Paul]

http://mathforum.org/dr.math/faq/faq.imag.num.html

There is an explanation.

[Keylia]

Wow thanks. That explained it more simply than I thought. It was very helpful.