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

Toán Lớp 8: x^4 – x^3 + x^2 – 1 Giúp mik vs ạ, please????????

Toán Lớp 8: x^4 – x^3 + x^2 – 1
Giúp mik vs ạ, please????????

Comments ( 2 )

  1. $x^4 – x^3 + x^2 – 1$
    $=(x^4 – x^3) +( x^2 – 1)$
    $=x^3(x-1)+(x+1)(x-1)$
    $=(x-1)(x^3+x+1)$
     

  2. Đề phân tích đa thức thành nhân tử
    x^4-x^3+x^2-1
    =(x^4-x^3)+(x^2-1)
    =x^3(x-1)+(x-1)(x+1)
    =(x-1)(x^3+x+1)

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

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