समाकलन $\int_0^{\infty} \frac{dx}{(1+x^2)(1+x)^2}$ का मान है

  • A
    $\frac{1}{4}$
  • B
    $\frac{1}{2}$
  • C
    $\frac{3}{4}$
  • D
    $\infty$

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