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If A^(-1)=[[3,-1,1],[-15,6,-5],[5,-2,2]]...

If `A^(-1)=[[3,-1,1],[-15,6,-5],[5,-2,2]]` and `B=[[1,2,-2],[-1,3,0],[0,-2,1]]`find`(AB)^-1`

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Initiatly find `B^(-1):B^(-1)=(adjB)/(|B|)=[[3,2,6],[1,1,2],[2,2,5]]`
Then `(AB)^(-1)=B^(-1)A^(-1)=[[9,-3,5],[-2,1,0],[1,0,2]]`
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A N EXCEL PUBLICATION-DETERMINANTS-QUESTION TYPE
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