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

Toán Lớp 8: 4xy – 5 / 10x^3y – 6y^2 – 5 / 10x^3y

Toán Lớp 8: 4xy – 5 / 10x^3y – 6y^2 – 5 / 10x^3y

Comments ( 2 )

  1. Giải đáp:
    = {2x – 3y}/{5x^3}
    Lời giải và giải thích chi tiết:
    {4xy – 5}/{10x^3 y} – {6y^2 – 5}/{10x^3 y}
    = {4xy – 5 – (6y^2 – 5)}/{10x^3 y}
    = {4xy – 5 – 6y^2 + 5}/{10x^3 y}
    = {4xy – 6y^2 + (5 – 5)}/{10x^3 y}
    = {4xy – 6y^2}/{10x^3 y}
    = {2y.2x – 2y.3y}/{10x^3 y}
    = {2y(2x – 3y)}/{10x^3 y}
    = {2y(2x – 3y)}/{2y . 5x^3}
    = {2x – 3y}/{5x^3}
    #SunHee

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