For this case we have the following polynomials: (5x2 + 2x + 11) - (7 + 4x - 2x2) Rewriting we have: 5x2 + 2x + 11 - 7 - 4x + 2x2 By grouping terms of the same degree we have: x2 (5 + 2) + x (2-4) + (11-7) Rewriting: 7x2 - 2x + 4 Answer:<span> the difference is </span>7x2 - 2x + 4