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[" Let "A=[[5,5 alpha,alpha],[0,alpha,5 ...

[" Let "A=[[5,5 alpha,alpha],[0,alpha,5 alpha],[0,0,0]]." If "|A^(2)|=25," then "| alpha|" equals "],[[" (a) "(1)/(5)," (b) "5," (c) "5^(2)," (d) "1]]

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