For any polynomial, the terms are simply separated by either a '+' or a '-'
Remember, the coefficient is the number that is right in front of the variable. Also, the degree of each term is simply equal to the exponent of the term. For example, the term -9x^4 has the number -9 out front of the variable, so the coefficient is -9. The exponent is 4, which means that the degree is 4.
So here's the completed table:
Term Coefficient Degree of term
-9x^4 -9 4
6x^3 6 3
-4x^2 -4 2
2x 2 1
-9 -9 0
Note: the degrees of each term is decreasing by 1