3. Suppose A € M5,5 (R) and det(A) = -3. Find each of the following: (a) det(A¹), det (A-¹), det(-2A), det(A²) (b) det(B), where B is obtained from A by performing the following 3 row operations in the given order: (i) 6R₁ + R₂ (ii) 5R3 (iii) R4 R5.

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