What is the value of b2 - 4ac for the following equation?

2x 2 - 2x - 1 = 0

-4
0
12

f . i can go whenever i feel like it bc it is confidential meaning only i would know how much i deposited besides the bank and they wouldnt care bc when you make a deposit you are using their services which means they are using there competition and gaining more customers

and if they dont well then thats less customers for them in a less profitable way

plz mark brainliest

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.

(53.5 - 18.4) m.

step-by-step explanation:

after undergoing a displacement of 18.4m, the initial position was (53.5 - 18.4) m if an object has a final position of 53.5.