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

Toán Lớp 8: x-12/6x-36+6/x2-6x giúp mk vs ạ x mũ 2 đấy ạ

Toán Lớp 8: x-12/6x-36+6/x2-6x giúp mk vs ạ x mũ 2 đấy ạ

Comments ( 2 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
     [x-12]/[6x-36] +6/[x^2 -6x]
    =[x-12]/[6(x-6)] +6/[x(x-6)]
    =[x(x-12)]/[6x(x-6)]+[6.6]/[6x(x-6)]
    =[x^2 -12x+36]/[6x(x-6)]
    =[(x-6)^2 ]/[6x(x-6)]
    =[x-6]/[6x]
    (Bài tham khảo)

  2. Answer
    {x – 12}/{6x – 36} + 6/{x^2 – 6x}
    = {x – 12}/{6 . (x – 6)} + 6/{x . (x – 6)}
    = {x . (x – 12)}/{6x . (x – 6)} + {6 . 6}/{6x . (x – 6)}
    = {x^2 – 12x}/{6x . (x – 6)} + 36/{6x . (x – 6)}
    = {x^2 – 12x + 36}/{6x . (x – 6)}
    = {x^2 – 2 . x . 6 + 6^2}/{6x . (x – 6)}
    = {(x – 6)^2}/{6x . (x – 6)}
    = {x – 6}/{6x}

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

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