Answer: [tex]2 z + 6[/tex] and [tex]2 (z + 3)[/tex]
Step-by-step explanation:
We have te following expression:
[tex]z+(z+6)[/tex]
Which can be written as:
[tex]z+z+6=2z+6[/tex]
Applying common factor 2 in the right side of the equation:
[tex]z+z+6=2(z+3)[/tex]