Difference of two squares
- Author:
- aras
- Topic:
- Square
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)