1. (2 points) Find all numbers $x, y$ for which the equality

$$
4 x^{2}+4 x y \sqrt{7}+8 y^{2}+2 y \sqrt{3}-\frac{2 y}{\sqrt{3}}+\frac{7}{3}=1
$$
1. $y=-\frac{2}{\sqrt{3}}, \quad x=\frac{\sqrt{7}}{\sqrt{3}}$.

+ (2 points) - solution is correct

- (0 points) - there are errors in the solution, including arithmetic errors