x^4-7x-2

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摘要 x^4-7x-2=x^4-2x^3+2x^3-4x^2+4x^2-7x-2=x^3(x-2)+2x^2(x-2)+(4x^2-7x-2)=(x-2)(x^3+2x^2)+(4x+1)(x-2)=(x-2)(x^3+2x^2+4x+1)

咨询记录 · 回答于2023-01-14

x^4-7x-2

x^4-7x-2因式分解怎么做

x^4-7x-2=x^4-2x^3+2x^3-4x^2+4x^2-7x-2=x^3(x-2)+2x^2(x-2)+(4x^2-7x-2)=(x-2)(x^3+2x^2)+(4x+1)(x-2)=(x-2)(x^3+2x^2+4x+1)

明白了吗？亲

你好，x^4-7x-2=x^4-2x^3+2x^3-4x^2+4x^2-7x-2=x^3(x-2)+2x^2(x-2)+(4x^2-7x-2)=(x-2)(x^3+2x^2)+(4x+1)(x-2)=(x-2)(x^3+2x^2+4x+1)

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