Question: 4. (a) Find A if A2 - 2A -31 =0 (Notice that / is an identity matrix and 0 is a zero matrix.) 12 (b)

4. (a) Find A" if A2 - 2A -31 =0 (Notice that /
4. (a) Find A" if A2 - 2A -31 =0 (Notice that / is an identity matrix and 0 is a zero matrix.) 12 (b) Suppose that A3 - 3A2 = 0 and A - 3/ is invertible. Can A have an inverse? Give reasons

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