A cube has an edge length of x + 2.

What is the surface area?

6 (x+2) ^2

Step-by-step explanation:

it has a surface area 6l^2

where l is the edge length

l is equal to (x+2)

, so

6 (x+2) ^2

Surface area = 6x^2 + 24x + 24.

Step-by-step explanation:

There are 6 faces on a cube.

Area of 1 face = (x + 2) ^2.

So the total surface area = 6 (x + 2) ^2

= 6 (x^2 + 4x + 4)

= 6x^2 + 24x + 24.