<image>(1) As shown in the left image below, the area of the shaded part can be calculated (written in the form of the difference of the squares of two numbers);
(2) As shown in the right image below, if the shaded part of the left image is cut out and rearranged to form a rectangle, its width is (___ ), its length is (___ ), and its area is (___ ) (written in the form of polynomial multiplication);
(3) By comparing the area of the shaded parts in the two images, a multiplication formula (___ ) can be obtained (express in an equation).