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

Toán Lớp 8: thực hiện phép tính (35x^2y^3-14x^3y^2-28x^2y^2):7x^2y^2

Toán Lớp 8: thực hiện phép tính (35x^2y^3-14x^3y^2-28x^2y^2):7x^2y^2

Comments ( 2 )

  1. Giải đáp:
    (35x^2y^3−14x^3y^2−28x^2y^2):7x^2y^2
    = [(35x^2y^3) : (7x^2y^2)] + [(-14x^3y^2) : (7x^2y^2)] + [(-28x^2y^2) : (7x^2y^2)]
    = 5y – 2x – 4
    #dariana 

  2. (35x^2y^3-14x^3y^2-28x^2y^2):7x^2y^2
    =(35x^2y^3:7x^2y^2)-(14x^3y^2:7x^2y^2)-(28x^2y^2:7x^2y^2)
    =5y-2x-4
    Vậy (35x^2y^3-14x^3y^2-28x^2y^2):7x^2y^2=5y-2x-4
     

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

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