Difference of two squares

This is a geometrical presentation of the formula The difference between the areas of the a-sided and the b-sided squares equals the area of the rectangle whose sides are (a+b) and (a-b). The sliders allow to check it as a and b change
Dragging the siliders you can see that it works for differnt values of a and b 1. -Apply the formula to write directly the result, without multiplying term to term : a) (x+2)·(x-2)= b) (3x-1)·(3x+1)= c) d) 2.- Identify the squares and factor the expression e) f) g) h)