i found P to have columns (1 1 1)^T, (1 1 0)^T, (1 0 0)^T and J= (-2 0 0)^T, (1 -2 -0)^T, (0 1 -2)^T. I need help solving the difference equations please

Question 4 (a) Suppose that A is the matrix 0 A = Find an invertible matrix P such that P- AP = J where J is in Jordan normal form. Hence find the solution to the system of difference equations given, for t 2 1, by t = -Ct-1 - 2t-1, yt = Ct-1 - 20t-1 - 2t-1 and #t = yt-1 - 3zt-1 when co = 2, yo = 2 and zo = 1