已知m＞4 化简|m-4|+|7-2m|

已知m＞4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3| 已知m＞4 化简|m-4|+|7-2m| 已知m>4,化简:|m-4|+|7-2m|+|m^2-2m+1|-|m^2-2m-3| m-2m-3m+4m-5m-6m+7m.2004m=? 化简(m*m-2m)/(4-m*m) 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 已知2^m=a,化简16×2^2m-1 ×2^3m-1 -4^m ×8^m 已知2^m=a,化简16×2^2m-1 ×2^3m-1 -4^m ×8^m 已知-3＜m＜2.化简|m-2|+|m+3|-|3m+9|-|2m-4| 已知m^2+m-1=0,那么m^4+2m^3-m-2009= 已知m+1/m=3,计算(m^4+m^2+1)/m^2的值 化简：【2m/(m+2) - m/(m-2)】÷m/（m²-4）