Class 12 Matrices · Mcq Single Correct1 Marksmatrix_operations
Class 12 Maths · Matrices · Mcq Single Correct #73
If A²=A, simplify (I+A)²−3A.
✅ Step-by-Step Solution
Final Answer: Option (A): I
- Expand to I+2A+A²−3A=I because A²=A.
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