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

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-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