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

Toán Lớp 9: 3x + 7 căn x – 6 =0 Giải giúp mình với ạ.Thanks

Toán Lớp 9: 3x + 7 căn x – 6 =0
Giải giúp mình với ạ.Thanks

Comments ( 1 )

  1. 3x+7√x-6=0
    3x+9√x-2√x-6=0
    3√x.(√x+3)-2.(√x+3)=0
    (√x+3)(3√x-2)=0
    TH1
    √x+3=0
    √x=-3
    x=-√3
    TH2
    3√x-2=0
    3√x=2
    √x=2/3
    x=√(2/3)
    Vậy x∈{-√3 ; √(2/3)}
    Cho mk xin hay nhất please
    Thank you

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