Originally posted by beros87
i know it has the form of ax^2 +bx+c=0 but i assumed that you already know that
but like in this case if a+b+c=0 then, it is known globally that x=1 or x=c/a
if a-b+c=0 then x=-1 or x=-c/a
these are global exceptions.
I wouldn't call that an exception, just a special case. One that is easier to calculate. If it was an exception it would break the rule.