Question

What indicators predict that a quadratic function will have a complex solution?

Answer 1

The Discriminant predict that a quadratic function will have a complex solution.

Discriminant =
`b^2 - 4ac`

(1) If the discriminant is positive, there are two roots
(2) If the discriminant is 0, there is only one root
(3) If the discriminant is a negative, there are complex solutions.