Answer:
x^2 + 8x + 12
Step-by-step explanation:
To find the area of a rectangle you have to multiply the width by the length of the shape.
First you have 2 given sides : (x+2) and (x+6)
You can multiply them together as follows ->
(x+2)(x+6)
x^2 + 2x + 6x + 12
x^2 + 8x + 12
