Question

What is the value of b^2 0 4ac for the following equation?

2x^2 0 2x 0 1 = 0
04
0
12

Answer 1

2x^2 - 2x - 1 = 0 a = 2, b = -2, c = -1 b^2 - 4ac = (-2)^2 - 4(2)(-1) = 4 + 8 = 12
so the answer is 12