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

Toán Lớp 8: Phân tích thành nhân tử x^3-4x^2+4x

Toán Lớp 8: Phân tích thành nhân tử
x^3-4x^2+4x

Comments ( 2 )

  1. Answer
    x^3 – 4x^2 + 4x
    = x . (x^2 – 4x + 4)
    = x . (x^{2} – 2 . 2 . x + 2^{2})
    = x . (x – 2)^{2}

  2. x^3 – 4x^2 + 4x
    =x(x^2 – 4x + 4) 
    = x(x^2 – 2 . 2 . x + 2^2)
    = x(x-2)^2
    Áp dụng HĐT :
    (a-b)^2 = a^2 – 2ab + b^2

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

About Thúy Mai