1个回答
2017-10-24
展开全部
提取2001x,化简=
2001x(x^2-3x+1)-7
=2001x(x^2-2x-x-1+2)-7
=2001x(-x+2)-7
=-2001(x^2-2x-1+1)-7
=-2001-7
=-2008
2001x(x^2-3x+1)-7
=2001x(x^2-2x-x-1+2)-7
=2001x(-x+2)-7
=-2001(x^2-2x-1+1)-7
=-2001-7
=-2008
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