线性代数矩阵方程问题

Question

如题所述

Answer 1

AB + E = A^2 +B
AB - B = A^2 - E

(A - E)B = A^2 - E
B = (A - E)^(-1) *(A^2 - E) =
2 0 1
0 3 0
1 0 2