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

Toán Lớp 8: Tính (x+2x^2+x^3-4):(x-1) Giúp m với????????????????????????????????????????

Toán Lớp 8: Tính (x+2x^2+x^3-4):(x-1)
Giúp m với????????????????????????????????????????

Comments ( 2 )

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

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

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