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

Toán Lớp 7: 3x^2-16/27=0 Giúp mik vớiiiiiiiiiiiiiii

Toán Lớp 7: 3x^2-16/27=0
Giúp mik vớiiiiiiiiiiiiiii

Comments ( 2 )

  1. 3x^2 – 16/27=0
    3x^2 =0+16/27
    =>3x^2=16/27
    =>x^2=16/27 :3
    =>x^2=16/81
    =>x^2=(+-4/9)^2
    =>x=+-4/9
    Vậy x=+-4/9

  2. 3x^2-16/27=0
    3x^2=0+16/27
    3x^2=16/27
    x^2=16/27 :3
    x^2=16/81
    x^2=(+-4/9)^2
    x=+-4/9
     

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