$\int \frac{2x + 1}{(x^2 + 4x + 1)^{3/2}} \, dx$

  • A
    $\frac{x^3}{(x^2 + 4x + 1)^{1/2}} + C$
  • B
    $\frac{x}{(x^2 + 4x + 1)^{1/2}} + C$
  • C
    $\frac{x^2}{(x^2 + 4x + 1)^{1/2}} + C$
  • D
    $\frac{x-2}{\sqrt{x^2 + 4x + 1}} + C$

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