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Please help Use the Gauss-Jordan method to find A , if it exists. 1 A= 21 -1 5 1 -2 . . ... Select the

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Use the Gauss-Jordan method to find A , if it exists. 1 A= 21 -1 5 1 -2 . . ... Select the correct choice below and fill in any answer boxes present in your choice. OA. A = O B. A 'does not exist

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