Question

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

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Answer 1

answer

3-11=-8

-15×6-5

-90-5

95

answer is (-8 95)