1. The problem statement, all variables and given/known data A is [4 0 1 2 3 2 1 0 4] Find an invertible P and a diagonal D so that D=P-1AP. I keep getting two linearly dependent eigenvalues which means it's not diagonal but this problem doesn't state "If it can't be done explain why" or anything like that. So I just want to verify with some of you. 3. The attempt at a solution I subtract with LI and take the determinant and get: (L-3)((L-4)^2 - 1) (L-3)(L^2-8L+16)-(L-3) L^3-8L^2+16L-3L^2+24L-48-L+3 L^3-11L^2+39L-45 Which I then factor out to be 5, 3, 3. Am I doing something wrong/missing something?