In math class I came up with a theory for an equasion like:
ax^2 + bx + c = 0
If thought that if b-a=c Then
the discriminant (b^2-4ac) = (a-c)^2
I think this always works. Please correct me if I'm wrong.

Also,
If b-a=c Then the solutions are
-c and c-b

That one I am very unsure because it only sometimes works. If you can come up for something like this, please tell me.

-mark