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

Toán Lớp 8: (4x^3+4x^2-7x+2):(2x-1) MN ơi giúp mik vs mik cần gấp

Toán Lớp 8: (4x^3+4x^2-7x+2):(2x-1) MN ơi giúp mik vs mik cần gấp

Comments ( 2 )

  1. Giải đáp:
    2x^2 + 3x – 2
    Lời giải và giải thích chi tiết:
    (4x^3 + 4x^2 – 7x + 2) : (2x – 1)
    = (4x^3 – 2x^2 + 6x^2 – 3x – 4x + 2) : (2x – 1)
    = [(4x^3 – 2x^2) + (6x^2 – 3x) – (4x – 2)] : (2x – 1)
    = [2x^2 (2x – 1) + 3x(2x – 1) – 2(2x – 1)] : (2x – 1)
    = (2x – 1)(2x^2 + 3x – 2) : (2x – 1)
    = 2x^2 + 3x – 2

  2. Giải đáp:
    (4x^(3)+4x^(2)-7x+2):(2x-1)
    =(4x^(3)-2x^(2)+6x^(2)-3x-4x+2):(2x-1)
    =[2x^(2)(2x-1)+3x(2x-1)-2(2x-1)]:(2x-1)
    =[(2x-1)(2x^(2)+3x-2)]:(2x-1)
    =2x^(2)+3x-2

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