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

Toán Lớp 8: 1/12x^3-6x+3x^2 2/5x^2y – 10xy^2

Toán Lớp 8: 1/12x^3-6x+3x^2
2/5x^2y – 10xy^2

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
     1) 12x^3-6x+3x^2
    =3x(4x^2-2+x)
     2) 5x^2y-10xy^2
    =5xy(x-2y)

  2. 1) 12x^3-6x+3x^2
    =2^2 .3x^3 -(2.3)x+3x^2
    =3x(4x^2 +x-2) 
    2) 5x^2 y-10xy^2
    =5x^2 y-5.2y^2
    =5xy(x-2y)

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

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