Question:One of the solutions to my quadratic formula for time in a projectile math problem is .5+.3270i
What does this mean?
The i represents the root of -1 (minus one), and is an imaginary number/concept.
If you got i in the solution to your quadratic equation, that means that your discriminant was negative (the discriminant is the b^2 - 4ac bit).
If the discriminant was negative, then you are going to get complex solutions to your quadratic equation, rather than real solutions. Not good. (Usually)
If you are supposed to have real solutions, then it looks like there has simply beeen an arithmetical error somewhere that let your discrimant become negative.
Check your working. Did you get a sign wrong? Did you miss out a term?
You could always post your working. I'll check it out.