Tính tích phân \[\smallint \frac{{dx}}{{\sqrt {{{(x + \frac{1}{2})}^2} + \frac{3}{4}} }}\]

\[ln|\frac{x}{2}\sqrt {{x^2} + x + 1} | + C\]

\[ln|x + \frac{1}{2}\sqrt {{x^2} + x + 1} | + C\]

\[ln|x + \sqrt {{x^2} + x + 1} | + C\]

\[ln|x + \frac{1}{2} + \sqrt {{x^2} + x + 1} | + C\]