m+2>3,-1/2m

已知m＞4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3| (1m+3m+5m+...+2009m)-(2m+4m+6m+...=2008m) 化简2[（m-1)m+m(m+1)]乘【(m-1)m-m(m+1)) (m+3m+5m+.+2008m)-(2m+4m+6m+.+2009m) (m+3m+5m+...+2009m)-(2m+4m+6m+...2008m) m-2m-3m+4m-5m-6m+7m.2004m=? 计算:(m+3m+5m+...+2009m)-(2m+4m+6m+...+2010m) (m+3m+5m+...+2013m)-(2m+4m+6m+...+2012m) (m+3m+5m.+2013m)-(2m+4m+6m+.+2012m)=? (m+3m+5m+...+2014m)-(2m+4m+6m+...+2013m) (m+3m+5m+...+2015m)-(2m+4m+6m+...+2014m)= 化简,:3(m-1)^2+(m+2)(m^2-2m+4)-m(m^2+3m-3)