2/2-x + 1/2 = 4/2x - 2x

2/(2 - x) + 1/2 = 4/(2 * x - 2 * x ^ 2); 

(2 * 2 + 1 * (2 - x))/(2 * (2 - x) = 4/(2 * x - 2 * x ^ 2); 

(4 + 2 - x)/(2 * (2 - x) = 4/(2 * x - 2 * x ^ 2); 

(6 - x)/(2 * (2 - x) = 4/(2 * x - 2 * x ^ 2);  

2 * (2 - x) * 4 = (6 - x) * (2  * x - 2 * x ^ 2); 

 8 * (2 - x) = (6 - x) * (2 * x - 2 * x ^ 2); 

8 * 2 - 8 * x = 6 * 2 * x - 6 * 2 * x ^ 2  - x * 2 * x + x * 2 * x ^ 2; 

16 - 8 * x = 12 * x - 12 * x ^ 2 - 2 * x ^ 2 + 2 * x ^ 3; 

16 - 8 * x = 12 * x - 14 * x ^ 2 + 2 * x ^ 3; 

2 * (8 - 4 * x) = 2 * (6 * x - 7 * x ^ 2 + x ^ 3); 

8 - 4 * x = 6 * x - 7 * x ^ 2 + x ^ 3; 

x ^ 3 - 7 * x ^ 2 + 6 * x + 4 * x - 8 = 0; 

x ^ 3 - 7 * x ^ 2 + 10 * x - 8 = 0; 

x1 = 5.43; 

x2 = 0.785 - 0.926 * i; 

x3 = 0.785 + 0.926 * i.