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

Toán Lớp 8: PTĐT thành nhân tử: x mũ 5 – x mũ 2 + x – 1

Toán Lớp 8: PTĐT thành nhân tử:
x mũ 5 – x mũ 2 + x – 1

Comments ( 2 )

  1. x^5-x^2+x-1
    =x^2(x^3-1)+(x-1)
    =x^2(x-1)(x^2+x+1)+(x-1)
    =(x-1)[x^2(x^2+x+1)+1]
    =(x-1)(x^4+x^2+x^2+x)
     

  2. #huy
    x^5-x^2+x-1
    =x^2(x^3-1)+(x-1)
    =(x-1)[x^2(x^2+x+1)+1]
    =(x-1)(x^4+x^2+x^2+x)
     

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

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