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Jawab:

U3 = ar^2 = 24

U6 = ar^5 = -3

......... ar^2 . r^3 = -3

......... 24 . r^3 = -3

......... r^3 = -3/24

.......... r^3 = -1/8

.......... r^3 = (-1/2)^3

.......... r = -1/2

U3 = ar^2

24 = a . (-1/2)^2

24 = a . 1/4

a = 96

U9 = ar^8

........ = 96 . (-1/2)^8

........ = 96 . 1/256

........ = 96 / 256

....... = 3 / 8

Penjelasan dengan langkah-langkah:

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