## Precalculus (6th Edition) Blitzer

$12x^3-5x^2-4x-4$ Degree: 3
$(-7x^3 + 6x^2 - 11x + 13) + (19x^3 - 11x^2 + 7x - 17) =12x^3-5x^2-4x-4$ For monomials with the same power, you can add their coefficients to combine them. The degree of a polynomial is the highest power.