Jawabanmu

2014-02-16T20:31:11+07:00
2014-02-16T20:32:46+07:00
U9 : U6 = 27
ar⁸ : ar⁵ = 27
r⁸ : r⁵ =27
r³ = 27
r = 3
U5 = 243
ar⁴ = 243
a 3⁴ - 243
a = 243 : 81
a = 3
U2 = ar = 3 x 3 = 9