Integral of $$$\frac{2}{\sqrt{- x^{2} - 2 x}}$$$

The calculator will find the integral/antiderivative of $$$\frac{2}{\sqrt{- x^{2} - 2 x}}$$$, with steps shown.

Find $$$\int \frac{2}{\sqrt{- x^{2} - 2 x}}\, dx$$$.