November 2018 1 87 Report
Jika a + ar = 25 dan ar^2 + ar^3 = 225, maka r = ...
A.9
B.3
C. +- 5
D. 5
E. +- 3
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Saya narasikan
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Jika a plus a dikali r sama dengan 25 dan a dikali r kuadrat plus a dikali r kubik sama dengan 225, maka r sama dengan...

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