Consider the following Gauss-Jordan reduction: 16 2 -9 16 2 0 1 0 0 1. 0 0 1 0 0 16 2 0 8 1 0 -- 1 1 1 0 0 1 0 0 1 A E, A E, = E = E4 = = A as a product A = E,'E,'E,'E,' of elementary matrices: -1 %3D 2 -9

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A: Matrix

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