Respuesta :

Answer:

it's answer is c. 2( z + 3)

Answer:

[tex]C) \: \: \: 2(z+3) [/tex]

Step-by-step explanation:

[tex]z+(z+6) \\ = z + z + 6 \\ = 2z + 6 \\ = 2(z + 3)[/tex]