find all irreducible polynomials of degree 2 and 3 over Z5

Question

I would like to find all irreducible polynomials of degree 2 and 3 with coefficients in Z5.

I know that the polynomial (x^5)^n - x equals with the product of all monic irreducible polynomials of degree d , where d divides n. But i don't know how to proceed from that point. Any ideas?