m²+m-1=0m²+m=1m³+2m²+2004=m³+m²+m²+2004=m(m²+m)+m²+2004=m+m²+2004=1+2004=2005
m³+2m²+2004=m(m²+m)+m²+2004∵m²+m-1=0∴m(m²+m)+m²+2004=m+m²+2004=1+2004=2005
m²+m-1=0所以m²+m=1所以原式=m³+m²+m²+2004=m(m²+m)+m²+2004=m+m²+2004=1+2004=2005