If A is square matrix such that A2 = A, then(I + A)3 – 7A is equal to: (1)
A. A
B. I – A
C. I
D. 3A
Answer:C
If A is square matrix such that A2 = A, then(I + A)3 – 7A is equal to: (1)
A. A B. I – A C. I D. 3A