Linear Algebra = 7. Let A € Mn(R) such that A² + 3A = –21. Show that if ) is an eigenvalue of A, then = -1 or -2.
Posted: Thu May 12, 2022 3:17 pm
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= 7. Let A € Mn(R) such that A² + 3A = –21. Show that if ) is an eigenvalue of A, then = -1 or -2.