# Geometric Representation of the Cube of a Sum

Geometric Representation of the Cube of a Sum

This Demonstration shows a geometric analog of the formula =+3b+3a+. This is done by dissecting a cube with side length into eight solids: two cubes with side lengths and ,three congruent rectangular solids with dimensions and three rectangular solids with dimensions .

3

(a+b)

3

a

2

a

2

b

3

b

a+b

a

b

a×a×b

a×b×b