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[" 91.If "A^(-4)=[[3,4],[5,6]]" ,then "A...

[" 91.If "A^(-4)=[[3,4],[5,6]]" ,then "A=],[[" (A) "[[6,-(4)/(3)],[-5,3]]],[" (C) "[[-3,2],[(5)/(2),-(3)/(2)]]]],[[" (C) "[[-3,2],[(5)/(2),-(3)/(2)]]]]

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