Respostas

2014-06-10T15:31:05-03:00
4x = 128 2 2x = 27 (decompõe o 128) 2x = 7 (cortamos as bases) X = 7: 2 = 3,5
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  • Usuário do Brainly
2014-06-10T15:34:44-03:00
4^x = 128
(2²)^x = 2^7
2^2x = 2^7
2x = 7
x = 7/2