Tentukan suku pertama,ke 6,dan ke 10 dari barisan A. 1,8,27,64,... B. 2,-4,8,-16,32,...

A. 1,8,27,64,...
U1 = 1
Un = n³
U6 = 6³ = 216
U10 = 10³ = 1.000

B. 2,-4,8,-16,32,...
U1 = 2
r = -4/2 = -2
U6 = 2 x (-2)^5 = -64
U10 = 2 x (-2)^9 = -1.024