Let \( A \) be a matrix of order \( 2 \times 2 \) such that \( A^{2}=0 \). \( A^{2}-(a+d) A+(a d....

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Let \( A \) be a matrix of order \( 2 \times 2 \) such that \( A^{2}=0 \).
\( \mathrm{P} \)
\( A^{2}-(a+d) A+(a d-b c) I \) is equal to
W.
(1) \( I \)
(2) 0
(3) \( -I \)
(4) None of these


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