Ln 84, Col 1 Problem 2. (a) When applying Gaussian elimination to A from the first problem, one possible first step is as follows: -3 1 21 2 -5 5 -6 RI (-3 1 2 R2 + 2R1 0 R3 + 3RI 6 -1 Find a single matrix B, E R3x3 such that -3 1 B A= -1

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