Just posting this a note :P

;)

https://www.youtube.com/watch?v=O8ezDEk3qCg

ACTUALLY, you have it posted incorrectly....you left out the negative  AND  the -b part is also divided by 2a

x= (-b+-sqrt(b^2-4ac))/(2*a)

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

Good spotting Electric Pavlov :)