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