Question

Find all complex solutions of 3x^2+x+4=0

I have -4 did I do this right?

Answer 1

a = 3 b = 1 c = 4

x= -1 +- sqrt(1 - 4*3*4) / (2*3)

x = -1 +- sqrt (-47) / 6

x1 = (-1/6) + i* (6.8556546004 / 6)

x2 = (-1/6) - i*(6.8556546004 /6)

Answer 2

So, both solutions are complex and so you weren't right with an answer of -4

Answer 3

Thank you!

Answer 4

And here's a calculator to see if you have done the work correctly:
http://www.1728.org/quadratc.htm