If you would like to find the value of the discriminant for the quadratic equation - 3 = - x^2 + 2x, you can do this using the following steps:
-3 = -x^2 + 2x
0 = -x^2 + 2x + 3
0 = ax^2 + bx + c
a = -1, b = 2, c = 3
D = b^2 - 4 a c = 2^2 - 4 (-1) 3 = 4 + 4 * 3 = 4 + 12 = 16
The correct result would be 16.
