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

Toán Lớp 8: 4x(x−7)−32(x−7)=0 =-.

Toán Lớp 8: 4x(x−7)−32(x−7)=0
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Comments ( 2 )

  1. ~ Bạn tham khảo ~
    4x(x-7) – 32(x-7) = 0
    <=> (x-7)(4x-32)=0
    <=> [(x-7=0),(4x-32=0):}
    <=> [(x=7),(x=8):}
    Vậy x={7;8}

  2. $\textit{Giải đáp + Lời giải và giải thích chi tiết:}$
    $\text{$4x(x – 7)^{}$ – $32(x – 7)^{}$ = 0}$
    $\text{⇒ $(4x – 3x)(x – 7)^{}$ = 0}$
    $\text{⇒ \(\left[ \begin{array}{l}4x-32=0\\x-7=0\end{array} \right.\) }$
    $\text{⇒ \(\left[ \begin{array}{l}x=8\\x=7\end{array} \right.\) }$
    $\text{Vậy $x^{}$ ∈ {7; 8}}$

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