What is the degree of the polynomial?

Given:
[tex]5 z^{3}-2 z^{4}-9 z^{2}+z[/tex]
To find:
Degree of the polynomial
Solution:
Degree of a polynomial:
The degree of the polynomial is highest power of the variable in the polynomial.
[tex]5 z^{3}-2 z^{4}-9 z^{2}+z[/tex]
Here, the highest power is 4.
The degree of the polynomial is 4.