2 5 12 0 15 1 15 7 1 10 -5 17 3 1 2 7 5 12 0 15 1 15 7 1 10 -5 17 6 0 1 2 7 10 17
Case 1: Build:12+15x+15x^7+x^10-5x^17 After delete:12+x^10-5x^17 Case 2: Build:12+15x+15x^7+x^10-5x^17 After delete: