what is the value of the discriminant b^2-4ac for the quadratic equation 0=x^2-4x+5 and what does it mean about the number of real solutions the equation has

Here's the quadratic equation formula:

Y = ax^2 + bx + c

A = 1

B = - 4

C = 5

Discriminant: - 4^2 - (4*1*5) = - 4

If discriminant is negative - > No real solutions

If discriminant is zero - > One real solution

If discriminant is positive - -> two real solutions