a^2 +4 - 17/(a+2)
a+2 | a^3 +2a^2 +4a -9
a^3 +2a^2
________________________
0 +0 +4a-9
4a+8
_________________________
0 -17 R
a^2 +4 - 17/(a+2)
a+2 | a^3 +2a^2 +4a -9
a^3 +2a^2
________________________
0 +0 +4a-9
4a+8
_________________________
0 -17 R