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A is square matrix satisfying the equation $A^{2} - 4 A - 5 I = O .$ Then $A^{- 1} =$

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A−4I

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Correct option is D

A2−4A−5I=O⇒AA−4I=5I⇒A−1=15A−4I

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A is square matrix satisfying the equation A2−4A−5I=O. Then A−1=

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

A is square matrix satisfying the equation $A^{2} - 4 A - 5 I = O .$ Then $A^{- 1} =$