So what is the factor theorem?

The factor theorem is a method used to factorise polynomials.

The Factor Theorem | ExamSolutions - youtube Video

Showing that x-1 is a factor of a cubic polynomial

How to show that x-1 is a factor of a given polynomial : ExamSolutions - youtube Video

Factorising a cubic polynomial

Method 1

How to factorise a cubic equation (Method 1) : ExamSolutions - youtube Video

Method 2

How to factorise a cubic polynomial (Method 2) : ExamSolutions - youtube Video

Finding constants in a polynomial given the factors

In this tutorial you are shown how to find constants in a given polynomial when you are given some of the factors.

How to find constants in a polynomial given factors : ExamSolutions - youtube Video