Take 10 minutes to prepare this exercise.
Then, if you lack ideas to begin, look at the given clue and start searching for the solution.
A detailed solution is then proposed to you.
If you have more questions, feel to ask then on the forum.
We define polynomials and by:
Do the euclidian division of by
Determine the real number such that:
is of a degree lower or equal to
Start again with the obtained polynomial to eliminate the term of degree
We infer that:
The quotient is then and the remainder