Respostas

2013-10-27T12:09:10-02:00
(3²)^(x-2) = 27^1/2
3^(2x-4) = (3³)^1/2
2x-4 = 3/2
4x-8 = 3
4x = 3+11
4x = 14
x = 14/4
x = 7/2
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