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11-03-2024
Mathematics

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Suppose that A = [[a-3,5],[-3,a-2]] Find the determinant of matrix A
A. det(A)=a²+a+21
B. det(A)=a²-5a-9
C. det(A)=a²-5a+21
D. None of these answers
E. det(A)=a²-5a+9

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