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

Toán Lớp 8: (2x^4 + x^3 – 3x^2 + 5x – 2) : (x^2 – x + 1) =???

Toán Lớp 8: (2x^4 + x^3 – 3x^2 + 5x – 2) : (x^2 – x + 1) =???

Comments ( 2 )

  1. Giải đáp:
     
    Lời giải và giải thích chi tiết:
    $\ (2x^{4} + x³ – 3x² + 5x – 2) : (x² – x + 1) $
    $\  = (2x^{4} – 2x³ + 3x³ + 2x² – 3x² – 2x² + 2x + 3x – 2) : (x² – x + 1) $
    $\  = [(2x^{4} – 2x³ + 2x²) + (3x³ – 3x² + 3x) – (2x² – 2x + 2)] : (x² – x + 1) $
    $\  = [2x²(x² – x + 1) + 3x(x² – x + 1) – 2(x² – x + 1)] : (x² – x + 1) $
    $\  = [(x² – x + 1)(2x² + 3x – 2)] : (x² – x + 1) $
    $\  = 2x² + 3x – 2 $

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

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