The remainder theorem is " If a polynomial f(x) is divided by
, the remainder is r = f(k) ".
The factor theorem is " A polynomial f(x) has a factor
".
The polynomial function
and factors
.

By using remainder theorem
and by using factor theorem
is a factor of f(x).

By using remainder theorem
and by using factor theorem
is a factor of f(x).
So,
are factors of the polynomial f(x).
The given factors
are factors of the polynomial f(x).
The remainder theorem is " If a polynomial f(x) is divided by
, the remainder is r = f(k) ".
The factor theorem is " A polynomial f(x) has a factor
".
The polynomial function
and factors
.

By using remainder theorem
and by using factor theorem
is a factor of f(x).
By the resulting quadratic expression factor as 



The complete factorization of f(x) is
.
The remaining factor of polynomial f(x) is
.