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

Toán Lớp 8: 2. Làm tính chia: (5x^3 + 6x^2 – 4x + 8) : (x+ 2)

Toán Lớp 8: 2. Làm tính chia: (5x^3 + 6x^2 – 4x + 8) : (x+ 2)

Comments ( 2 )

  1. Mong cho lời giải hay nhất ❤️⭐️
    toan-lop-8-2-lam-tinh-chia-5-3-6-2-4-8-2

  2. Giải đáp:
    (5x^3 + 6x^2 – 4x + 8) : (x+ 2)
    = (5x^3 + 10x^2 – 4x^2 – 8x + 4x + 8) : (x + 2)
    = [5x^2.(x + 2) – 4x.(x + 2) + 4.(x + 2)] : (x+ 2)
    = [(x + 2).(5x^2 – 4x + 4)] : (x+ 2)
    = 5x^2 – 4x + 4
    #dariana

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

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