Find all real solutions of equation $2 x^2 + 4 x - 2 = 0$.

Does the equation have real solutions? Input Yes or No:

If your answer is Yes, input the solutions:
$x_1 =$ and $x_2 =$ with $x_1\le x_2$.
Note: Use sqrt(10) or 10**(1/2) for $\sqrt{10}$, etc.