NCERT Example 18 - Matrices

Question: If A = [[1, 2, 3], [3, -2, 1], [4, 2, 1]], show that A^3 - 23A - 40I = O.

Answer: A^3 - 23A - 40I = O.

Full step-by-step NCERT solution with diagrams on Something by Zero.

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