3m^2-m-[7m-2(4m-5)++9m^2]
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3m^2-m-[7m-2(4m-5)++9m^2]3m^2-m-[7m-2(4m-5)++9m^2]3m^2-m-[7m-2(4m-5)++9m^2]3m^2-m-[7m-2(4m-5)+9m^2]=
3m^2-m-[7m-2(4m-5)++9m^2]
3m^2-m-[7m-2(4m-5)++9m^2]
3m^2-m-[7m-2(4m-5)++9m^2]
3m^2-m-[7m-2(4m-5)+9m^2]
=3m^2-m-(7m-8m+10+9m^2)
=3m^2-m-7m+8m-10-9m^2
=-6m^2-10
=3m^2-m-[7m-8m+10+9m^2]
=3m^2-m-7m+8m-10-9m^2
=-6m^2-10
m-2m-3m+4m-5m-6m+7m.2004m=?
m-2m-3m+4m-5m-6m+7m-8m-9m+...+2002m-2003m-2004m求m的值
计算(m+3m+5m+7m+.+2009m)-(2m+4m+6m+.+2008m)
计算(m+3m+5m+7m+.+2013m)-(2m+4m+6m+.+2012m)
(m+3m+5m+7m+.+2009m)-(2m-4m-6m-.-2008m)=?
(m+3m+5m+7m+.+2011m)-(2m+4m+6m+.+2010m) 要说理由!
计算：m-2m-3m+4m-5m-6m+7m-8m-9m+...+2002m-2003m-2004m
m-2m-3m+4m-5m-6m+7m-8m-9m+.+2002m-2003m-2004m
计算：（m+3m+5m+...+2009m)-(2m+4m+6m+...+2008m)
(m+3m+5m+...+2009m)-(2m+4m+6m+...2008m)
(m+3m+5m+...+2014m)-(2m+4m+6m+...+2013m)
(m+3m+5m+...+2013m)-(2m+4m+6m+...+2012m)
(m+3m+5m+...+2015m)-(2m+4m+6m+...+2014m)=
计算:(m+3m+5m+...+2009m)-(2m+4m+6m+...+2010m)
(m+3m+5m.+2013m)-(2m+4m+6m+.+2012m)=?
(m+3m+5m+...+2009m)-(2m+4m+...+2008m)怎么算
合并同类项m-2m+3m-4m+5m-.+2011m-2012m
m+3m+5m+...+2011m-2m-4m-...-2010m等于多少?