tolong cara kerjanya

r^4-2 = 96 : 384
r^2 = 1/4
r = 1/2

U2 = ar = 384
a×(1/2) = 384
a = 768
U8 = a×r^7
= 768 × (1/2)^7
= (2^8 × 3) × (1/2^7)
= 2 × 3 = 6