Classify - 2x4 - x3 + 8x2 + 12 by degree.

quartic

quintic

cubic

quadratic

The answer would be quartic

This is a quartic polynomial

The term quartic describes a polynomial that is of degree 4.

-2x ⁴ - x³ + 8x² + 12 has a degree of 4 because the highest degree in a term is 4. (For a polynomial, the degree of a term is the sum of all the exponents on a variable in that term.)