Assume that the matrices A and B below are row equivalent. Find bases of Col(A) and Null(A). -6 0 21 0 -7 [1 0 1 B = 0 -2 0 7 0 0 1 5 0 0 3 -1 -1 -1 3 A %3D -2 4 3 1 0 0 2 -4 4 34 0 0

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