Hi guys, I've been tasked with rearranging the quadratic root formula to make "a" the subject. I've been struggling on this one for a little while now and can't figure out how to isolate a. For reference, the equation i'm referring to is the addition half of the formula, i.e.

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

Any help is much appreciated.

Regards,

Sathya