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[1 0 21 If A 0 2 1, prove that A3-6A + 7A +21= 0 L2 0 3]

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[1 0 21 If A 0 2 1, prove that A3-6A + 7A +21= 0 L2 0 3]

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To prove that A3 6A2 7A 2I 0 we first need to calculate the powers of matrix A and then substitut... blur-text-image

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