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

Toán Lớp 8: (9x4y3 – 15x3y4) : 3x2y2 + 5xy2 Giup em voi a . E cam on

Toán Lớp 8: (9x4y3 – 15x3y4) : 3x2y2 + 5xy2 Giup em voi a . E cam on

Comments ( 2 )

  1. (9^4y^3 – 15x^3y^4) : 3x^2y^2 + 5xy^2
    (9x^4y^3 : 3x^2y^2) – (15x^3y^4 : 3x^2y^2) + 5xy^2
    =3x^2y – 5xy^2 + 5xy^2
    =3x^2y

  2. Giải đáp : 3x^2 y
    (9x^4 y^3 – 15x^3 y^4 ) : 3x^2 y^2 + 5xy^2
    = 3x^2 y – 5xy^2 + 5xy^2
    = 3x^2 y
    $#OHKA$

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