State the degree of each polynomial. If it is not a polynomial in one variable, explain why.

Answer:
The degree of the polynomial is 4.
Step-by-step explanation:
Given:
Polynomial = [tex]7x^4 + 5x^2 +x - 9[/tex]
To Find:
The degree of the polynomial = ?
Solution:
The degree of the polynomial is the highest degree in the polynomial expression.
Here, the degrees are 4, 2, 1
and the coefficients are 7 , 5 , 1
and the constant term is -9
The Highest among the degrees is 4
Thus the degree of the polynomial is 4