已知x^2+5*x-2004=0,求分式((x-2)^3-(x-1)^2+1) /(x-2)的值.
人气:238 ℃ 时间:2019-10-19 12:37:42
解答
由x^2+5x-2004=0可得:x^2=2004-5x (1)〔(x-2)^3-(x-1)^2+1)〕/(x-2)=〔(x-2)^3-(x-2)^2-2x+3+1)〕/(x-2)=〔(x-2)^3-(x-2)^2-2(x-2)〕/(x-2)=(x-2)^2-(x-2)-2=x^2-5x+4把(1)代入上式x^2-5x+4有2004-5x-5x+4=2008...
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