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hoaimon99
2 năm trước
64 x 4 mũ x = 45 27 . x mũ 3 = 243 49 x 7 mũ x = 2401 3 x = 81 3 mũ x + 25 = 26 . x mũ 2 + 2 .3 mũ 0
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