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

Toán Lớp 8: Phân tích đa thức sau thành nhân tử:8x³-6x²+3x-1

Toán Lớp 8: Phân tích đa thức sau thành nhân tử:8x³-6x²+3x-1

Comments ( 2 )

  1. $\\$
    8x^3-6x^2+3x-1
    =8x^3-4x^2 – 2x^2 + x+2x-1
    =4x^2 (2x-1) – x(2x-1)+(2x-1)
    =(2x-1)(4x^2-x+1)

  2. Gửi bạn:
    $8x^3-6x^2+3x-1$
    $=8x^3-1-3x(2x-1)$
    $=(2x-1)(4x^2+2x+1)-3x(2x-1)$
    $=(2x-1)(4x^2-3x+2x+1)$
    $=(2x-1)(4x^2-x+1)$
     

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