Need help finding C and D. I know is simple algebra but I'm stuck.

In each of 8-10: (a) suppose a sequence of the form lt.t2.t3 ...t" where t 0, satisfies the given recurrence relation (but not necessarily the initial conditions), and find all possible values of t: (b) suppose a sequence satisfies the given initial conditions as well as the recurrence relation, and find an explicit formula for the sequence. 8. ak k-1 3ak-2, for all integers k z 2 k-1 10b for all integers k 2 1U. Ar, n for all inte mann 1 0, c1 Co