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Matrices And Determinants

JEE Main 2022 (Online) 27th July Morning Shift

MCQ+4 / -12022

ধরি \(A = \left( {\matrix{ 1 & 2 \cr { - 2} & { - 5} \cr } } \right)\) এবং \(\alpha ,\beta \in R\), যাতে \(\alpha {A^2} + \beta A = 2I\) । তাহলে \(\alpha + \beta\) এর মান হবে

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