The answer is (x+4) (x-2) =x.x
Square (Rug A) has area x times x = x^2 (All sides of square are equal)
x is the side of Rug A
For the Rectangle (Rug B) it mentioned that it has a length of that is 4 ft greater than the length of Rug A. The expression could be written as Length = (x+4)
It also mentions that the width of Rectangle is 2 ft less than Rug A. The expression could be written as Width = (x-2)
So, if you multiply (x+4) and (x-2), will give you the area of rectangle (Rug B)
The question mentions that the area of the rectangle and square are equal, so therefore the answer is (x+4) (x-2) =x.x
Hope it helps!