Find the solution to the following linear, homogeneous recurrence with constant coefficients: an = 8an-1-19an 2+12an 3 for n 2 with initial conditions a = -7, a = -11, a = -23. The solution is of the form: an = a(ri)" + a(7)" + 3(13)" for suitable constants a1, 02, 03, 71, 72, r3 with r1 r2