Question

What is the value of b2 - 4ac for the following equation? 2x2 - 2x - 1 = 0 -4 12 0

Answer 1

Answer:

I think you mean the equation is

$2 {x}^{2} - 2x - 1 = 0$

And you must find

$delta = {b}^{2} - 4ac = 4 + 8 = 12$