Enter a simplified polynomial expression for the area of a parallelogram whose base is (x + 8) units and whose height is (x − 2) units.

The area of the parallelogram is ? square units.

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm