Question

I will give a medal,become a fan and message whoever can help:
1) Write a polynomial of the smallest degree with roots 3, 3i, and -3i.
2) Write a polynomial of the smallest degree with roots i and -i.
3) Write a polynomial of the smallest degree with roots 3, -2, and 6.
4)Write a polynomial of the smallest degree with roots 5 and 6.