# Difference of two squares

This is a geometrical presentation of the formula
The difference between the areas of the

*-sided and the***a***-sided squares equals the area of the rectangle whose sides are***b***and***(a+b)***. The sliders allow to check it as***(a-b)***and***a***change***b**Dragging the siliders you can see that it works for differnt values of
d)
2.- Identify the squares and factor the expression
e)
f)
g)
h)

*and***a****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)## New Resources

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