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[" If "A=[[-2,3,-1],[-1,2,-1],[-6,9,-4]]...

[" If "A=[[-2,3,-1],[-1,2,-1],[-6,9,-4]]" and "B=[[1,3,-1],[2,2,-1],[3,0,-1]]" ,then "],[0quad AB=BA],[" O "AB!=BA],[" O "AB=1/2BA],[" O None of these "]

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