JEE Math Practice Question
Let A be a 2 $$\times$$ 2 matrix with det (A) = $$-$$ 1 and det ((A + I) (Adj (A) + I)) = 4. Then the sum of the diagonal elements of A can be :
- A.$$-$$1
- B.2
- C.1
- D.$$- \sqrt2$$
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