合并同类项:(m+3m+5m+…+2009m)-(2m+4m+6m+…+2008m)
合并同类项:(m+3m+5m+…+2009m)-(2m+4m+6m+…+2008m)
合并同类项m-2m+3m-4m+5m-.+2011m-2012m
(m+3m+5m+.+2008m)-(2m+4m+6m+.+2009m)
(m+3m+5m+...+2009m)-(2m+4m+6m+...2008m)
计算:(m+3m+5m+…+2015m)-(2m+4m+6m+…+2014m)=
合并同类项9m^2+[4m^2-3m-(2m^2-6m)
计算:(m+3m+5m+...+2009m)-(2m+4m+6m+...+2010m)
(m+3m+5m+7m+.+2009m)-(2m-4m-6m-.-2008m)=?
(m+3m+5m+…+2009m)-(2m+4m+6m+…+2010m)= 思路也要
化简,合并同类项:(2m-3)+m-(3m-2)
(1m+3m+5m+...+2009m)-(2m+4m+6m+...=2008m)
计算:(m+3m+5m+…+2011m)-(2m+4m+6m+…+2010m)=