Tolong donkk buat bsk nihh tolong ya jwb yg tepat pake cara

2.
a = 1 b = -1-1 = -2
U56 = 1 + (56-1) × -2
U56 = 1 + 55 × -2
U56 = 1 + (-110)
U56 = -109

3.
a = 1/2
b = 2/5 - 1/2 = 4/10 - 5/10 = -1/10
U10 = 1/2 + (10-1)× -1/10
U10 = 1/2 + 9 × -1/10
U10 = 1/2 - 9/10
U10 = 5/10 - 9/10
U10 = -4/10
U10 = -2/5

2)
U56 = a + (n-1) b
= 1 + (56-1) -2
= 1 + 55 × -2
= 1 + (-110)
= -109

3)
U10 = a + (n-1) b
= 1/2 + (10-1) -1/10
= 1/2 + 9 × -1/10
= 1/2 + (-9/10)
= 5/10 + (-9/10)
= - 4/10
atau
- 2/5

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