Q26Short answer
If A = 2 1 3 , then verify that A2 + A = A (A + I), where I is 3 × 3 unit 0 1 1 matrix. 4 0 0 −1 2
If A = 2 1 3 , then verify that A2 + A = A (A + I), where I is 3 × 3 unit 0 1 1 matrix. 4 0 0 −1 2