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

Toán Lớp 8: (x^3-x^2+x+3):(x+1) giúp em với ạ

Toán Lớp 8: (x^3-x^2+x+3):(x+1)
giúp em với ạ

Comments ( 2 )

  1. $\text{#Chớp#}$
    $\text{(x³ – x² + x + 3) : ( x + 1)}$
    $\text{= ( x³ : x) + ( -x² : x ) + ( x : x) + ( 3: x ) + ( x³ : 1 ) + ( x² : 1 ) + ( x : 1 ) + ( x : 3)}$
    $\text{= x ² – x + x + 3x + x³ + x² + x + 3x}$
    $\text{=x² – 2x + 3}$

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