已知m*m+m-1=0,求m*m*m+2m*m-2005
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已知m*m+m-1=0,求m*m*m+2m*m-2005已知m*m+m-1=0,求m*m*m+2m*m-2005已知m*m+m-1=0,求m*m*m+2m*m-2005m*m+m-1=0m²
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已知m*m+m-1=0,求m*m*m+2m*m-2005
已知m*m+m-1=0,求m*m*m+2m*m-2005
m*m+m-1=0 m²＋m＝1
m*m*m+2m*m-2005=m³＋2m²－2005=m﹙m²＋m﹚＋m²－2005=m＋m²－2005=－2004
m*m+m-1=0,即：m*m+m=1
m*m*m+2m*m-2005
=m(m*m+m)+m*m-2005
=m+m*m-2005
=1-2005
=-2004
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