Respuesta :

wegnerkolmp2741o

Answer:

8

Step-by-step 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