math
posted by Jane .
New photo imaging techniques on computers allow artists to distort an image from its original shape. Figure 1 is a square image (X x X). Figure 2 is stretched 4 units wider and shrunk 4 units shorter than figure 1. (x+4)(X4).
How many square units greater is the area of Figure 1 than the area of Figure 2?
Please solve and explain. Thanks.

difference = x^2  (x^2  16) = 16