a = 2
b = 4
Un = a+(n-1)b
U10 = 2+(10-1)4
U10 = 2+36
U10 = 38
B.38
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caranya:
barisan bilangan=2,6,10,14
rumus=
b=6-2=4
rumus=4n+2
U10=4(10)+2
=42
a = 2
b = 4
Un = a+(n-1)b
U10 = 2+(10-1)4
U10 = 2+36
U10 = 38
B.38