Respuesta :

Given the expression

[tex]z+(z+6)[/tex]

simplify the expression

[tex]\begin{gathered} z+(z+6)=z+z+6 \\ =2z+6 \end{gathered}[/tex]

factor the expression, the common factor is 2

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

Therefore, the correct answer is 2(z + 3)