Question

What is the value of the discriminant for the quadratic equation –3 = –x^2 2x?

discriminant = b^2 – 4ac

–8
4
8
16

Answer 1

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.