$20^{2-3x^2} = (40\sqrt{5})^{3x^2-2}$ હોય,તો $x$ ની કિંમત શોધો.

  • A
    $\pm \sqrt{\frac{3}{2}}$
  • B
    $\pm \sqrt{\frac{2}{3}}$
  • C
    $\pm \sqrt{\frac{4}{3}}$
  • D
    $\pm \sqrt{\frac{5}{4}}$

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