已知n²+m-1=0,求m³+2m²+2007的值(要有过程和理由)

已知n²+m-1=0,求m³+2m²+2007的值(要有过程和理由)
已知n²+m-1=0,求m³+2m²+2007的值(要有过程和理由)

已知n²+m-1=0,求m³+2m²+2007的值(要有过程和理由)
m³+2 m²+2007
=m(m²+m-1)+(m²+m)+2007
=0+1+2007=2008
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