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Question

If A=[22−32],B=[0−110] , then (B−1A−1)−1=...........

A
[2223]
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B
[2223]
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C
[2322]
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D
[1123]
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Solution

The correct option is A [2223]
Now , (AB)1=B1A1
So,
(B1A1)1=(A1)1(B1)1
=AB

AB=[2232][0110]=[2223]
(B1A1)1=[2223]

answer (a)

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