$\int {\frac{{{x^2}dx}}{{{{(a + bx)}^2}}}} = $

  • A
    $\frac{1}{{{b^3}}}\left[ {x + \frac{{2a}}{b}\log (a + bx) - \frac{{{a^2}}}{{a + bx}}} \right] + C$
  • B
    $\frac{1}{{{b^3}}}\left[ {x - \frac{{2a}}{b}\log (a + bx) + \frac{{{a^2}}}{{a + bx}}} \right] + C$
  • C
    $\frac{1}{{{b^3}}}\left[ {x + \frac{{2a}}{b}\log (a + bx) + \frac{{{a^2}}}{{a + bx}}} \right] + C$
  • D
    $\frac{1}{{{b^3}}}\left[ {x + \frac{{2a}}{b}\log (a + bx) - \frac{{{a^2}}}{{a + bx}}} \right] + C$

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