Question

What is the discriminant of the quadratic equation 0 = -x2 + 4x – 2?

Answer 1

8

Explanation:

The discriminant is

b^2 -4ac

where a is the x^2 coefficient, b is the x coefficient and c is the constant

-x^2 +4x -2

a = -1 b=4 and c = -2

4^2 -4(-1) (-2)

16 - 8

8