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Solution - Operations on Matrices - Addition of Matrices

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Question

If `A=[[1,2,2],[2,1,2],[2,2,1]]` ,then show that `A^2-4A-5I=0` and hence find A-1.

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Reference Material

Solution for concept: Operations on Matrices - Addition of Matrices. For the courses 12th CBSE (Arts), 12th CBSE (Commerce), 12th CBSE (Science)
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