14. The roots of the equation $x^{2}-2 x-a^{2}-a=0$ are $\left(\alpha_{a}\right.$,
$$
\begin{array}{r}
\left.\beta_{a}\right)(a=1,2, \cdots, 2011) . \\
\text { Find } \sum_{a=1}^{2011}\left(\frac{1}{\alpha_{a}}+\frac{1}{\beta_{a}}\right) \text { . }
\end{array}
$$