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MHT CET 2018 Math Solved Paper

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Question : 9

Total: 50

If A = [

1	2	3
−1	1	2
1	2	4

] then (A2−5A)A−1 =

[
4 2 3
−1 4 2
1 2 1
]
[
−4 2 3
−1 −4 2
1 2 −1
]
[
−4 −1 1
2 −4 2
3 2 −1
]
[
−1 −2 1
4 −2 −3
1 4 −2
]

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