A farmer wants to construct a rectangular livestock pen so that he maximizes the area with 14,884 feet of fencing. Find the exact dimensions of the pen. The fence should be a square with side length 3721 feet. This equation describes a circle, and therefore its graph fails the vertical line test. . This equation describes a vertical line.
Vertical lines fail the vertical line test.
Find the extraneous solution. The solution is . The extraneous solution is . Find the extraneous solution. The extraneous solutions are and .