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Compute (AB)^(-1) " if "A= [(1,1,2),(0,2...

Compute `(AB)^(-1) " if "A= [(1,1,2),(0,2,-3),(3,-2,4)] and B^(-1) = [(1,2,0),(0,3,-1),(1,0,2)] `

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The correct Answer is:
`=(-1)/9 [(-16,-12,-1),(-21,-11,7),(-10,2,-3)]=[(16/19,12/19,1/19),(21/19,11/19,-7/19),(10/19,-2/19,3/19)]`
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