作业帮已知m^2+m-1=0,求m^2+2m^2+2007的值
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已知m^2+m-1=0,求m^2+2m^2+2007的值
已知m^2+m-1=0,求m^2+2m^2+2007的值
已知m^2+m-1=0,求m^2+2m^2+2007的值
m^2+m-1=0
m^2+m=1
m^3+2m^2+2007
=m(m^2+m)+m^2+2007
=m+m^2+2007
=1+2007
=2008
m^2+m-1=0
m^2+m=1
m^3+2m^2+2007=m^3+m^2+m^2+2007
=m(m^2+m)+m^2+2007
=m+m^2+2007
=1+2007
=2008
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