March 2019 1 16 Report
Tolong dijawab ya... pakai cara nya.

Diketahui Un = 2n^2 - 5. Nilai dari U4 + U5 adalah ...
A. 154
B. 82
C. 72
D. 26

note : ( ^ ) pangkat,
jadi kalau ^2 artinya pangkat 2.

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