Confuzzled

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

OH OH I GOT DIS!

If you need a good way to memorize it just sing this song (to the tune of Pop Goes the Weasle):

x equals negative b

Plus or minus the square root of 

b squared minus four ac

All over 2a

There's also some videos on this so check them out if you can.

Hope this helped c: