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Math Help - invertible matrices

  1. #1
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    invertible matrices

    Let A be a square matrix.

    Prove: If A^3 = 0 then I - A is invertible.
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  2. #2
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    Quote Originally Posted by grandunification View Post
    Let A be a square matrix.

    Prove: If A^3 = 0 then I - A is invertible.
    What is (I-A)(I+A+A^2)?
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  3. #3
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    nice.
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