यदि $z_{1} = 2 - i$ और $z_{2} = 1 + i$ है,तो $\left| \frac{z_{1} + z_{2} + 1}{z_{1} - z_{2} + 1} \right|$ का मान ज्ञात कीजिए।

  • A
    $1$
  • B
    $\sqrt{2}$
  • C
    $2$
  • D
    $\frac{1}{\sqrt{2}}$

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यदि $z = 3 + 5i$ है,तो $z^3 + \bar{z} + 198 = $

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