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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: tìm x biết (2x – 1) mũ 3 = 3 mũ 5 + 100

Toán Lớp 6: tìm x biết (2x – 1) mũ 3 = 3 mũ 5 + 100

Comments ( 2 )

  1. (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

  2. (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=4

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222-9+11+12:2*14+14 = ? ( )

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