यदि $A = \begin{bmatrix} \alpha & 2 \\ 2 & \alpha \end{bmatrix}$ और $|A^{3}| = 125$ है,तो $\alpha$ का मान ज्ञात कीजिए।

  • A
    $\pm 1$
  • B
    $\pm 2$
  • C
    $\pm 3$
  • D
    $\pm 5$

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