Find the discriminant of the quadratic 5x^2 - 2x + 8 - 2x^2 + 6x + 2 - 2x^2 + 4x - 1.
If we simplify it we get x2+8x+9. The discriminant is b2−4ac so we get 64−4⋅9=28
28 is the discriminant.
+958 
+14 
