A matrix AAA has characteristic polynomial p(λ)=(4−λ)(1−λ)p(\lambda) = (4 - \lambda)(1 - \lambda)p(λ)=(4−λ)(1−λ). What are the eigenvalues?
444 and 111
−4-4−4 and −1-1−1
444 and −1-1−1
−4-4−4 and 111