(seq. 76)

A [rectangle top] B
\x
/k6
8/4 \2
C [rectangle end] D
F

Ao 16 : x :: x : y
...... x : y :: y : 2

16y = x²
2x = y²

y = x²
....16
y = V2x

x² = V2x
16

x⁴
256 = 2x

x⁴ = 512x x⁴
..............x = 512

....x =V³512 = 8 x³ = 512

64

12

256 |4096 (16
.........256
........1536
........1536

512|