NCERT Miscellaneous Exercise Q3 - Determinants

Question: If A^{-1}=(1/2)[[3,-1,1],[-15,6,-5],[5,-2,2]] and B=[[1,2,-2],[-1,3,0],[0,-2,1]], find (AB)^{-1}.

Answer: (1/2)[[9,-3,5],[-2,1,0],[1,0,2]].

Full step-by-step NCERT solution with diagrams on Something by Zero.

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