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Un = a + ( n - 1 ) b
U1.000 = 2 + ( 1.000 - 1 ) 6
U1.000 = 2 + ( 999 ) 6
U1.000 = 2 + 5.994
U.1000 = 5.996
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Not sure if this is correct or not but my answer is 48
These were my steps:
2(6+(12divided(3+1)-1
2x6=12. 3+1=4 4-1=3
12divided by 3 =4
So now all we have are 12 from (6x2) and 4 from 12div. By3
Then we multiply 12 with the 4 which =48
Hope that helped and made sense.