Consider the recurrence relation an=5an−1−6an−2a_n = 5a_{n-1} - 6a_{n-2}an=5an−1−6an−2. What is the characteristic equation?
r2−5r+6=0r^2 - 5r + 6 = 0r2−5r+6=0
r2+5r−6=0r^2 + 5r - 6 = 0r2+5r−6=0
r2=5r−6r^2 = 5r - 6r2=5r−6
5r−6=05r - 6 = 05r−6=0