The given expression is a single term with coefficient 3 and degree 8.
Since the term includes a variable x, its degree is the exponent 8.
The given expression is a single term with coefficient -4 and degree 9.
Since the term includes a variable x, its degree is the exponent 9.
The given expression is a single term with coefficient -6 and degree 6.
Since the term includes a variable x, its degree is the exponent 6.
The given polynomial is 5x^0 + 3x^8 - 4x^9 - 6x^6.
The degree of the polynomial is the highest degree among all its terms, which is 9.