m^2+m-1=0,求m^3+2m^2+2013_其他解答

m^2+m-1=0,求m^3+2m^2+2013

人气：113 ℃　时间：2020-06-02 02:36:25

解答

m^2+m-1=0
m^2+m=1
m^3+2m^2+2013
=m^3+m^2+m^2+2013
=m(m^2+m)+m^2+2013
=m+m^2+2013
=1+2013
=2014