thanks I cant seem to figure out these 3 equations any help

thanks!

I cant seem to figure out these 3 equations, any help would be appreciated on any of them 3. Find the general solution of the recurrence equation gn+2 = 3gn+1-2gn. 4. Solve the recurrence equation hn+3 = 6hn+2 -11hn+1 +6hn if h0 = 3, h1 = 2, and h2 = 4. 5. Find an explicit formula for the nth Fibonacci number fn. (See subsection 9.1.1.)

As g(n+2) = 3g(n+1)-2g(n)