Discriminant = b^2 - 4ac, where a, b and c come from the form of the quadratic equation as ax^2 + bx + c
Discriminant = (4)^2 - 4(1)(5) = 16 - 20 = -4
-4 < 0, therefor there are no roots
(If the discriminant = 0, then there is one root If the discriminant > 0, there are two roots, and if it is a perfect square (eg. 4, 9, 16, etc.) then there are two rational roots If the discriminant < 0, there are no roots)
