Answer:
Step-by-step explanation:
The complete question is shown in the attachment.
The length of the rectangle is x + 12. The width of the rectangle is x + 3.
Recall that area of a rectangle is
In terms of x, the area is
Recall the distributive property of real numbers:
We apply this property to get:
We expand again to get:
We now simplify to obtain:
The area of the rectangle is
