Решите уравнение: x^2+2x-195=0.

\[x^{2} + 2x - 195 = 0\]

\[D = 2^{2} - 4 \cdot 1 \cdot ( - 195) =\]

\[= 4 + 780 = 784\]

\[\sqrt{D} = \sqrt{784} = 28\]

\[x_{1} = \frac{- 2 + 28}{2} = \frac{26}{2} = 13\]

\[x_{2} = \frac{- 2 - 28}{2} = \frac{- 30}{2} = - 15\]

\[Ответ:13;\ - 15.\]