Evaluate limx→01+x−1−x/2+x2/8x3\lim_{x \to 0} \frac{\sqrt{1+x} - 1 - x/2 + x^2/8}{x^3}limx→0x31+x−1−x/2+x2/8.
1/161/161/16
1/81/81/8
−1/16-1/16−1/16
000