Answer:
Explanation:
For any polynomial, we can determine the degree by finding the variable with the largest exponent. For the given polynomial:
![5z^(3) - 2z^(4) -9z^(2) + z](https://img.qammunity.org/2020/formulas/mathematics/middle-school/301il560nqt2djvtzzd16qd01loj7jjf6a.png)
we can see that
contains the variable with the highest exponent, 4, so the degree of this polynomial is 4.