19)
x^2 + 6x - 9
x + 6 [ x^3 + 12x^2 + 27x - 45 ]
x^3 + 6x^2
_____________________
6x^2 + 27x - 45
6x^2 + 36x
_________________
-9x - 45
-9x - 54
__________
9
20 )
5b^2 - 3b - 4
b + 6 [ 5b^3 + 27b^2 -22b - 22 ]
5b^3 + 30b^2
_____________________
-3b^2 - 22b
-3b^2 - 18b
______________
-4b - 22
-4b - 24
__________
2