设m平方+m=1则m立方+2m平方+2007=?
问题描述:
设m平方+m=1则m立方+2m平方+2007=?
答
m³+2m²+2007
=m﹙m²+m﹚+m²+2007
=m+m²+2007
=1+2007
=2008