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Let B = ⎥ ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎢ ⎣ ⎡ α α α 4 3 2 1 3 1 , α > 2 be the adjoint of a matrix A and |A| = 2. Then [ α – 2 α α ] B ⎥ ⎥ ⎥ ⎦ ⎤ ⎢ ⎢ ⎢ ⎣ ⎡ α α α 2 – is equal to

  1. 0
  2. 16
  3. – 16
  4. 32

Correct answer: – 16

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