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m^2+m=1,则m^3+2m^2+2012=
人气:229 ℃ 时间:2020-04-20 05:36:09
解答
m^3+2m^2+2012
=m^3+m^2+m^2+2012
=m(m^2+m)+m^2+2012
=m+m^2+2012
=1+2012
=2013
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