Ms. Keller wants to design the garden so that it resembles a square contained within a rectangle. The modeled area of the square is given by the expression 4x2 + 4x - 2, and the area of the rectangle is
given by the expression 10:c2 – 9. Ms. Keller wants to figure out the area of the rectangle minus the
area of the square in order to determine what area she has available for planting some plants. What
expression represents the area Ms. Keller will have available for planting?