Suppose that A is a square matrix such that det A^4=0. Explain why A cannot be invertible.

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- December 22nd 2008, 09:34 AM #1

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- December 22nd 2008, 10:05 AM #2

- December 22nd 2008, 02:52 PM #3

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- December 22nd 2008, 03:20 PM #4