3x^2 -5x 4 ______________________________________ x+4 | 3x^3 7x^2 -15x 18 | | 3x^3 12x^2 --------------- 0 -5x^2 -15x -5x^2 -20x ---------------- 0 4x 18 4x 16 ---------- 0 2
Correct answer: IGNORE all others!!