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Question
Choose the correct alternative:
If `("AB")^-1 = [(12, -17),(-19, 27)]` and `"A"^-1 = [(1, -1),(-2, 3)]` then `"B"^-1` =
Options
`[(2, -5),(- 3, 8)]`
`[(8, 5),(3, 2)]`
`[(3, 1),(2, 1)]`
`[(8, -5),(-3, 2)]`
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Solution
`[(2, -5),(- 3, 8)]`
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