2(6 + 3n) - 4
i need the answer...

See below.

Step-by-step explanation:

2(6 + 3n) - 4 (Given)

12 + 6n - 4 (Distribute)

6n + 8 (Add like terms)

3n + 4 (Divide by a factor of 2)

In case you wanted to solve for n:

2(6 + 3n) - 4 = 0 (Given)

12 + 6n - 4 = 0 (Distribute)

6n + 8 = 0 (Add like terms)

6n = -8 (Substract on both sides)

n = -4/3 (Divide 6 on both sides)

no not all of them.

step-by-step explanation:

some of them have a square base.