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

Toán Lớp 8: rut gon 5x-10/25x^2-50x ko can giai thich

Toán Lớp 8: rut gon 5x-10/25x^2-50x ko can giai thich

Comments ( 2 )

  1. Giải đáp:
    1/(5x)
    Lời giải và giải thích chi tiết:
    (5x-10)/(25x²-50x)=[5(x-2)]/[25x(x-2)]=[5(x-2)]/[5x.5(x-2)]=1/(5x)

  2. Hướng dẫn trả lời:
    $\text{Ta có: $\dfrac{5x – 10}{25x^2 – 50x}$.}$
    $\text{= $\dfrac{5.(x – 2)}{25x.(x – 2)}$.}$
    $\text{= $\dfrac{5.(x – 2)}{5x.5.(x – 2)}$.}$
    $\text{= $\dfrac{1}{5x}$.}$
    Giải đáp:
    $\text{= $\dfrac{1}{5x}$.}$

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

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