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CBSE Class 12 Math 2023 Delhi Set 1 Solved Paper

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Question : 3
Total: 38
If for a square matrix A,A2−A+I=O, then A−1 equals:
Solution:     👈: Video Solution
A2−A+I‌=0
A−1A2−A−1A+A−1I‌=0
IA−I+A−1‌=0
A−1‌=I−A
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