Question

Enter the degree of the polynomial 5x5 + 8x2 + 2x – 3x9 – 8x4 – 4x5

Answer 1

The degree of a polynomial is the highest degree of any term.
The degree of a term is the sum of the exponents of all the variables of the term,. A plain variable has degree 1.
One term is -3x^9.
That has the largest exponent of any term, so the degree is 9.