October 2019 2 25 Report
94. Jika jumlah n suku pertama barisan
aritmetika adalah S, = 7n² - 3n, maka
rumus suku ke-n barisan tersebut adalah
A.Un= 3n+ 1
B.Un = 5n -1
C.Un= 70-3
D.Un= 14n - 10​

tolong di jawab ya kak

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