I've calculated the following eigen value and determined the following matrix:
eigenvalue, U= -5
Original matrix
([-5-U] 2 -3)
(0 [1-U] -2)
(0 1 [4-U])
Solved Matrix:
(0 0 28)0
(0 3 -1)0
(0 0 0) 0
I'm not exactly clear on how to determined the eigenvector