Respuesta :

Answer:

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

Answer:

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.