If A =squre matrix that A2=I, then (A−I)3+(A+Z)3−7A =? – InterviewSolution

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1.	If A =squre matrix that A2=I, then (A−I)3+(A+Z)3−7A =?
Answer» If A =squre matrix that $A^{2} = I$ , then $(A - I)^{3} + (A + Z)^{3} - 7 A$ =?

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