ABSTRACT
It is worth attempting to rearrange equations as, often, they can be put into a more familiar form simply by rearrangement, e.g.:
is a quadratic equation in x"
while a/x "~ + b / x + c = 0
and in terms of x the three roots are:
b Xl'2"3=Yl'2'3-- 3
Equations of degree higher than the second (quadratic equations) are not solvable directly as the method of solving the cubic equation above shows. Generally recourse must be had to either graphical or numerical techniques.
