Yefim S. answered 10/07/20
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A2 + 3A - I = 0, A(A + 3I) = I, So, A + 3I = A-1 exist
Jayden N.
asked 10/07/20
Yefim S. answered 10/07/20
Math Tutor with Experience
A2 + 3A - I = 0, A(A + 3I) = I, So, A + 3I = A-1 exist
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