Respuesta :

[tex]-2(x-2b+ \frac{1}{2})=-2*x+2*2b- \frac{2}{2}= -2x+4b-1[/tex]
So the correct answer would be D
Have a nice day!!! :)
[tex]-x(x - 2b+ \frac{1}{2}) \\ \\ -2x + 4b - 1 \\ \\ Answer: \fbox {-2x + 4b - 1 (D)}[/tex]