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Verified answer
Barisan dan DeretMatematika
Kelas 9 SMP
KTSP 2006
Barisan Geometri
a = √3
r = U2/U1
r = (3 + √3)/√3
r = 1 + √3
U3 = √3 . (1 + √3)²
U3 = √3 . (4 + 2 √3)
U3 = 6 + 4√3 (D)
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