If A is inv. matrix, is A-2A^(-1) invertible? If B^3-2B+I=0,

FancyChancey

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Oct 21, 2008
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Hi all. I'm having a real tough time with this question. I don't know where to begin and how to go about the question. Can someone point me in the right direction please?

(Problem is on the attachment)
 

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