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

Toán Lớp 8: $x^{3}$ – $x^{2}$ – 10x + 6 : (x + 3) bằng bao nhiêu Chi tiết cụ thể ra :))

Toán Lớp 8: $x^{3}$ – $x^{2}$ – 10x + 6 : (x + 3) bằng bao nhiêu
Chi tiết cụ thể ra :))

Comments ( 2 )

  1. #tnvt
    (x^3-x^2-10x+6):(x+3)
    =(x^3+3x^2-4x^2-12x+2x+6):(x+3)
    =[x^2(x+3)-4x(x+3)+2(x+3)]:(x+3)
    =[(x+3)(x^2-4x+2)]:(x+3)
    =x^2-4x+2

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