$\"\"$

The polynomial is $\"\"$ .

To find the degree of polynomial, you must find the degree of each term.

The degree of a monomial is the sum of the exponents of all its variables.

The monomial is $\"\"$ , so its degree $\"\"$ .

The monomial $\"\"$ is a nonzero constant, so its degree $\"\"$ .

The degree of a polynomial is the greatest degree of any term in the polynomial.

In the polynomial greatest degree is 4, so degree of polynomial is 4. $\"\"$

The degree of a polynomial $\"\"$ is 4.