Question

6.
If A, B are two square matrices of ordern
and A and B commute (K be a real number).
Then
1) A-KI, B-KI Commute
2) A-KI, B - KI are equal
3) A-KI, B-KI do not commute
4) A +KI, B - KI do not commute​

Answer 1

Answer:

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