Find a closed-form representation of the following recurrence relations: (a) an = 6an_i - 9an-2 for n Greaterthanequalto 2 with initial conditions a_o = 4 and a_1 = 6 (b) an = 4a_n-1 + 5a_n-2 for n Greaterthanorequalto 2 with initial conditions a_0 = 2 and ai = 8 Show all you steps for full credit.
