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](/uploads/image/z/7217934-6-4.jpg?t=%E5%B7%B2%E7%9F%A5m%2Am%2Bm-1%3D0%2C%E6%B1%82m%2Am%2Am%2B2m%2Am-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
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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