先化简再求值m^2(m+3)+2m(m^2-1)-(m^4+m^3-m^2)/1/3m其中m等于2013

先化简再求值m^2(m+3)+2m(m^2-1)-(m^4+m^3-m^2)/1/3m其中m等于2013
先化简再求值m^2(m+3)+2m(m^2-1)-(m^4+m^3-m^2)/1/3m其中m等于2013

先化简再求值m^2(m+3)+2m(m^2-1)-(m^4+m^3-m^2)/1/3m其中m等于2013
m^2(m+3)+2m(m^2-1)-(m^4+m^3-m^2)/1/3m
=m^3+3m^2+2m^3-2m-3(m^3+m^2-m)
=3m^3+3m^2-2m-3m^3-3m^2+3m
=m
m=2013
原式
=2013