(2x – 1)^3 = 3^5 + 100 (2x – 1)^3 = 243 + 100 (2x – 1)^3 = 343 (2x – 1)^3 = 7^3 2x – 1 = 7 2x = 8 x = 8 : 2 x = 4 Vậy x = 4 Trả lời
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