How do you find the discriminant of #x^2-2x+4=0# and use it to determine if the equation has one, two real or two imaginary roots?
To find the discriminant you take the radical (root) of the quadratic formula and insert the values you know from your standard form equation and simplify.
- One real root:
- No real roots and two imaginary roots:
- Two real roots:
Sorry but I do not know how to calculate if there are imaginary roots.