Respuesta :

TSO
[tex]2cb + 7cx + 2b + 7x\\\\(2cb + 7cx)+(2b + 7x)\\\\c(2b + 7x)+1( 2b + 7x)\\\\\boxed{\bf{(c+1)( 2b + 7x)}}[/tex]

The answer is B.
(2b + 7x)(c + 1) is your answer