Which expressions are equivalent to z + (z + 6)z+(z+6)z, plus, left parenthesis, z, plus, 6, right parenthesis?

and

Step-by-step explanation:

We have the following expression:

Let's solve it:

We have this result:

However if we apply coomon factor 2, we will have a simplified result:

6, 10

9, -13

12, -21

18, -23

step-by-step explanation:

you just add 6 to the x-coordinate and subtract 10 from the y-coordinate.

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