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Verified answer
Materi : Barisan dan deret2 , 8 , 32 , 128 , ... , ...
a = 2
r = 8/2 = 4
Un = a × r^n-1
U7 = 2 × 4^7-1
U7 = 2 × 4^6
U7 = 2 × 4.096
U7 = 8.192
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MatematikaBarisan dan deret IX SMP
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