Diketahui Un=2n2-5 nilai Dari U15+U20?

By Admin ReiPosted on October 29, 2022

Diketahui Un=2n2-5 nilai Dari U15+U20?

$un = 2 {n}^{2} - 5 \ \ u15 = 2 {(15)}^{2} - 5 = 2(225) - 5 = 450 - 5 = 445 \ \ u20 = 2 {(20)}^{2} - 5 = 2(400) - 5 = 800 - 5 = 795 \ \ u15 + u20 = 445 + 795 = 1240$

semoga membantu