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a
−6,11
b
−11,6
c
11,6
d
6,11
answer is A.
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Detailed Solution
By Caylay-Hamilton therem, every square Matrix satisfies its characteristic equation.A-λI=0⇒1-λ000λ-λ10-24-λ=0⇒λ3-6λ2+11λ-6=0⇒A3-6A2+11A-6I=0⇒6I=A3-6A2+11AMultiplying with A-1, we get6A−1=A2−6A+11I⇒c=-6 and d=11