MCQ
જો ${{A}^{2}}-A+I=O,$ તો ${{A}^{-1}}=............$
- A$A+I$
- ✓$I-A$
- C$A-I$
- D$A$
$\therefore I=A-A^2$
$\therefore IA^{-1}=A.A^{-1}-A(AA^{-1})$
$\therefore A^{-1}=I-AI=I-A$
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