Identify the non-homogeneous part of the recurrence an=5an−1−6an−2+2na_n = 5a_{n-1} - 6a_{n-2} + 2^nan=5an−1−6an−2+2n.
000
−6an−2-6a_{n-2}−6an−2
2n2^n2n
5an−15a_{n-1}5an−1