mohon bantu aku kak.. besok harus di kumpulin

3.un = 2n^2-5
U(1) = 2(1)^2-5 = -1

U(2) = 2(2)^2-5 = 11

U(3) = 2(3)^2-5 = 31

U(4) =2(4)^2-5 = 59

U(5) = 2(5)^2-5 = 95

U(6) = 2(6)^2-5 = 139

U(7) = 2(7)^2-5 = 191

U(8) = 2(8)^2-5 = 251

U(9) = 2(9)^2-5 = 319

U(10) = 2(10)^2-5 = 395