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[" If "A=[[5a,-b],[3,2]]" and "A" adj "A...

[" If "A=[[5a,-b],[3,2]]" and "A" adj "A=AA^(1)" ,then "5a+b" is equal to: "],[[" (a) "5," (b) "4],[" (c) "13," (d) "-1]]

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