You might want to visit the polynomial division module, if you have trouble performing the division.
(2) For some applications, it is preferable to proceed slightly different in the setup: Instead of writing an irreducible quadratic term in the form
Consider the example
"Complete the square'' in the irreducible term and write , then use the setup described above:
The method then proceeds analogously. Multiply both sides by the common denominator
simplify and solve the resulting system of linear equations to obtain A=1, B=2 and C=-3:
The coefficients you obtain are not the same as when you use the standard setup!