Suku ke-n dari barisan 5, 8, 11, 14, ... adalah ... A. 2n + 3 B. 3n + 2 C. 4n + 1 D. n + 4

Please, let me answer your question :)
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5, 8, 11, 14...

U1= 5
b= 3
Ditanya= Un?

Un= U1 + (n-1) b
Un= 5 + (n-1) 3
Un= 5 + 3n - 3
Un= 3n + 5 - 3
Un= 3n + 2

Yg B jawabannya.

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