For the recurrence an=5an−1−6an−2a_n = 5a_{n-1} - 6a_{n-2}an=5an−1−6an−2, what are the roots of the characteristic equation?
1,51, 51,5
2,32, 32,3
1,61, 61,6
−2,−3-2, -3−2,−3