(m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算
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(m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算(m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算(m+3m+5m+...+2009m)-
(m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算
(m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算
(m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算
(m+3m+5m+...+2009m)-(2m+4m+...+2008m)
=m+(3-2)m+(5-4)m+……+(2009-2008)m
=m+m+m+……+m
=1005m
嗯
=m+(3m-2m)+(5m-4m)+……+(2009m-2008m)
=m+m+m+……+m
=1005m
(m+3m+5m+...+2009m)-(2m+4m+...+2008m)
=m+(3-2)m+(5-4)m+……+(2009-2008)m
=m+m+m+……+m
=1005m
计算:(m+3m+5m+...+2009m)-(2m+4m+6m+...+2008m)
(m+3m+5m+...+2009m)-(2m+4m+6m+...2008m)
计算:(m+3m+5m+...+2009m)-(2m+4m+6m+...+2010m)
(m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算
计算(m+3m+5m+7m+.+2009m)-(2m+4m+6m+.+2008m)
(m+3m+5m+7m+.+2009m)-(2m-4m-6m-.-2008m)=?
(m+3m+5m+.+2008m)-(2m+4m+6m+.+2009m)今天刚考完试,想确认一下,,我写的是2009(m+3m+5m+.+2009m)-(2m+4m+6m+.+2008m)
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计算:(m+3m+5m+.+2009m)-(2m+4m+6m+.+2008)帮帮忙呀!
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M