Teaching DSSSB TGT Mock Test 2025 Mathematics Matrices Operations on Matrices

If A = \(\begin{bmatrix} 1 & 2 & 3 \\ 4 & 5 & 7 \\ 2 & 3 & 2 \\ \end{bmatrix}\), such that A3 - 8A2 + αA + βI = 0, then  \(\frac{ \alpha}{\beta+2}\)  is

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