Chapter 5 - Exponents and Polynomials - 5.1 - Addition and Subtraction of Polynomials - Problem Set 5.1 - Page 194: 5

degree = 3

The degree of the polynomial is equal to the degree of the term with the highest degree. The terms of the polynomial have the following degrees: First: $=3$ Second: $=2$ Third: $=1$ Fourth: $=0$ Thus, the degree of the given polynomial is 3.