Kak tolong soal yg barisan geometri...

Bab Barisan dan Deret
Matematika SMP Kelas IX

geometri
r = (2 : 16)^1/(5 - 2)
r = (1/8)^(1/3)
r = 1/2

U9 = U5 x r^4
U9 = 2 x (1/2)^4
U9 = 2 x 1/16
U9 = 1/8

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