23 2X 1 X 1 X 2X 4X 8�    �   3 2     X 2X 28 X 4 X 8...

24/

2

3

2

x 1

x 1

x

2x

4x 8

x

2x

28 x 4

x 8

.

x

2

2

x

4 x

4x 4

= 0

2

= 0 28/

x 1 4 x

x

3x 4