What is the value of the discriminant of the quadratic equation -2x2=-8x+8, and what does its value mean about the number of real number solutions the equation has?

-The discriminant is equal to 0, which means the equation has no real number solutions.
-The discriminant is equal to 0, which means the equation has one real number solution.
-The discriminant is equal to 128, which means the equation has no real number solutions.
-The discriminant is equal to 128, which means the equation has two real number solutions.