MathematicsMedium244×since 2002Q4479Suppose A is any 3×\times× 3 non-singular matrix and ( A −-− 3I) (A −-− 5I) = O where I = I₃ and O = O₃. If α\alphaαA + β\betaβA⁻¹ = 4I, then α\alphaα + β\betaβ is equal to :A8B7C13D12Check answerSkip