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

Toán Lớp 8: Phân tích đa thức thành nhân tử: 4x^3y^2 – 8x^2y + 12xy^2 3x^2 – 6xy – 5x + 10y

Toán Lớp 8: Phân tích đa thức thành nhân tử:
4x^3y^2 – 8x^2y + 12xy^2
3x^2 – 6xy – 5x + 10y

Comments ( 2 )

  1. Giải đáp:
        4x^3y^2 – 8x^2y + 12xy^2
    = 4xy.x^2y-4xy.2x+4xy.3y
    = 4xy(x^2y-2x+3y)
        3x^2 – 6xy – 5x + 10y
    = (3x^2-6xy)-(5x-10y)
    = 3x(x-2y)-5(x-2y)
    = (x-2y)(3x-5)

  2. ~Chris~
    4x^3y^2-8x^2y+12xy^2
    = 4xy(x^2y-2x+3y)
    _______________________________
    3x^2-6xy-5x+10y
    = 3x(x-2y)-5(x-2y)
    = (3x-5)(x-2y)

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