જો $\sqrt{a + ib} = x + iy$ હોય,તો $\sqrt{a - ib}$ ની શક્ય કિંમત શું થાય?

  • A
    $x^2 + y^2$
  • B
    $\sqrt{x^2 + y^2}$
  • C
    $x + iy$
  • D
    $x - iy$

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