Approximation with Small Quantities

If $x$ be so small that its square and higher powers may be neglected, find the value of $\frac{\sqrt[4]{1-\frac{3}{5}x}+{\left(1+\frac{5}{6}x\right)}^{-6}}{\sqrt[5]{1+2x}+\sqrt{1-\frac{x}{2}}}$.

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XIV. Binomial Theorem: Any Index, Examples XIV.b, No. 31