(7x² + 6x³ -11 - 2x) / (2x + 1)
3x² + 2x + 2
--------------------------------
6x³ + 7x² - 2x - 11
-6x³ - 3x²
= 4x² - 2x
-4x² - 2x
= -4x - 11
4x + 2 = -9
3x² + 2x + 2 - 9/(2x + 1)
