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

Toán Lớp 8: X x (x+4) =x mu 2 Nhanhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Toán Lớp 8: X x (x+4) =x mu 2
Nhanhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Comments ( 2 )

  1. Giải đáp:
    x in {0}
    Lời giải và giải thích chi tiết:
    x.(x+4)=x^2
    <=>x.x+x.4=x^2
    <=>x^2 +4x=x^2
    <=>4x= 0
    <=>x=0
    Vậy x in {0}

  2. x × (x+4) =x^2
    => x×x+x×4=x^2
    => x^2 + 4x=x^2
    => 4x=x^2 -x^2 = 0
    => x=0:4
    => x=0
     

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