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Please solve this question of Determinants fully in the given attachment

Please solve this question of Determinants fully in the given attachment  

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Grade:12th pass

1 Answers

Abhishek Kumar
9 Points
5 years ago
The  ∆` determinant is formed by the cofactor of ∆ and we know that ∆`=∆n-1
Here n=3. So ∆`=∆^2 
Hence the answer is b

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