You may want to review dividing exponentials and multiplying polynomials by monomials first.
Dividing polynomials by monomials is much like multiplying them. Now, however, you need to divide each term of the polynomial by the monomial. For example, suppose you want to divide (2x2 − 6x)/(2x). Then the answer is 2x2/(2x) − 6x/(2x), or x − 3.