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

Toán Lớp 8: tim x x^2 +36 =12x giai giup minh voi a

Toán Lớp 8: tim x
x^2 +36 =12x
giai giup minh voi a

Comments ( 2 )

  1. #NO COPY
    x^2 + 36 = 12x
    x^2 – 12x + 6^2 = 0
    (x – 6)^2 = 0
    <->  x – 6 = 0
            x        = 6
    Vậy…
    Chúc bạn học tốt nha 🙂

  2. x²+36=12x
    ⇔x²-12x+36=0
    ⇔x²-6x-6x+36=0
    ⇔x(x-6)-6(x-6)=0
    ⇔(x-6)(x-6)=0
    ⇔x-6=0
    ⇔x=6
     

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

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