What is the value of b2 - 4ac for the following equation? 2x 2 - 2x - 1 = 0

For you to make an equation a quadratic equation, you need everything to be on one side, so you add one to both sides.

2x^2 + 3x + 0=0

a=2, b=3, c=0

b^2-4ac (In the next step just plug in your variables)

3^2 - 4 (2) (0)

9 - 8 (0)

9 - 0

Your answer=9