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

Toán Lớp 8: Kết quả phép tính (15x2y – 20xy2 + 25x2y2) : 5xy là:

Toán Lớp 8: Kết quả phép tính (15x2y – 20xy2 + 25x2y2) : 5xy là:

Comments ( 2 )

  1. (15x^2y-20xy^2+25x^2y^2):5xy
    =(15x^2y : 5xy)-(20xy^2:5xy)+(25x^2y^2:5xy)
    =3x-4y+5xy

  2. $\text{( 15x²y – 20xy² + 25x²y² ) : 5xy }$
    $\text{= 15x²y : 5xy – 20xy² : 5xy + 25x²y² : 5xy }$
    $\text{= 3x – 4y + 5xy}$ 

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

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