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

Toán Lớp 8: Phân tích đa thức thành nhân tử: 3y(x-1)^2 + 7x(1-x)

Toán Lớp 8: Phân tích đa thức thành nhân tử:
3y(x-1)^2 + 7x(1-x)

Comments ( 2 )

  1. 3y(x-1)^2 + 7x(1-x)
    =3y(x-1)^2-7x(x-1)
    =(x-1)[3y(x-1)-7x]
    =(x-1)(3xy-3y-7x)

  2. #tnvt
    3y(x-1)^2+7x(1-x)
    =3y(x-1)^2-7x(x-1)
    =(x-1)[3y(x-1)-7x]
    =(x-1)(3xy-3y-7x)
     

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