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

Toán Lớp 8: Tìm x : (X-1)(x^2+x+1)-x(x^2-3)= 6062

Toán Lớp 8: Tìm x :
(X-1)(x^2+x+1)-x(x^2-3)= 6062

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
     $(x-1)(x^2+x+1)-x(x^2-3)=6062$
    $↔ (x^3-1)-x^3+3x=6062$
    $↔ x^3-1-x^3+3x=6062$
    $↔ 3x-1=6062$
    $↔ 3x=6063$
    $↔ x=2021$
    Vậy $x=2021$

  2. $\left(x-1\right)\left(x^2+x+1\right)-x\left(x^2-3\right)=6062$
    $⇒3x-1=6062$
    $⇒3x-1+1=6062+1$
    $⇒3x=6063$
    $⇒\dfrac{3x}{3}=\dfrac{6063}{3}$
    $⇒x=2021$
    Vậy $x=2021$

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

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