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Let matrix A =[ (1, 1, 1), (1, 1, 1 ),(...

Let matrix ` A =[ (1, 1, 1), (1, 1, 1 ),(1, 1, 1)] ` and ` B= [(2, -1, -1) , (-1, 2, -1) ,(-1, -1, 2 )], ` then-

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