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

Toán Lớp 8: Tìm x x^5(3x-1):x^5(3x-1)-5^6:5^2=0 (x KO thuộc 1/3 và 0 )

Toán Lớp 8: Tìm x
x^5(3x-1):x^5(3x-1)-5^6:5^2=0 (x KO thuộc 1/3 và 0 )

Comments ( 2 )

  1. (x^5(3x – 1)^m)/(x^5(3x – 1)^(m – 1)) – 5^6 : 5^2 = 0
    ⇔ (3x – 1) – 5^4 = 0
    ⇔ 3x – 1 = 625
    ⇒ 3x = 626
    ⇒ x = 626/3
    Vậy  S = {626/3}

  2. ~ Bạn tham khảo ~
    x^5(3x-1)^m÷x^5(3x-1)^[m-1]-5^6÷5^2=0
    <=> (3x-1)^[m-m+1]-5^[6-2]=0
    <=> 3x-1-5^4=0
    <=> 3x-626=0
    <=> 3x=626
    <=> x=626/3
    Vậy S={626/3}

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