Tolong dibantu soalnya gurunya killer yang b

U1 = 6.(-1/3)1 - 1
U1 = (-2)1 - 1
U1 = -2 - 1
U1 = -3

U2 = 6.(-1/3)2 - 1
U2 = (-2)2 - 1
U2 = -4 - 1
U2 = -5

U3 = 6.(-1/3)3 - 1
U3 = (-2)3 - 1
U3 = -6 - 1
U3 = -7

#semoga membantu:)