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

Toán Lớp 6: Tìm x , biết ( 2x – 1 )^3 = 27

Toán Lớp 6: Tìm x , biết
( 2x – 1 )^3 = 27

Comments ( 2 )

  1. ( 2x – 1 )^3 = 27
    => ( 2x –  1 )^3 = 3^3
    => 2x – 1 = 3
    => 2x = 3 + 1
    => 2x = 4
    => x = 4 : 2
    => x = 2
      $\text{ Vậy x = 2 }$
     

  2. (2x – 1)^{3} = 27
    => (2x – 1)^{3} = 3^{3}
    => 2x – 1 = 3
    => 2x = 3 + 1
    => 2x = 4
    => x = 4 : 2
    => x =2
    Vậy x = 2

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

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