Choose the correct answer in the following question: If A=[αβγ−α – InterviewSolution

1.	Choose the correct answer in the following question: If A=[αβγ−α] is such that A2=I. then (a)1+α2+βγ=0(b)1−α2+βγ=0(c)1−α2−βγ=0(d)1+α2−βγ=0
Answer» Choose the correct answer in the following question: If $A = [\begin{matrix} α & β γ & - α \end{matrix}]$ is such that $A^{2} = I$ . then $(a) 1 + α^{2} + β γ = 0 (b) 1 - α^{2} + β γ = 0 (c) 1 - α^{2} - β γ = 0 (d) 1 + α^{2} - β γ = 0$

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