{|3m-m|/√2}^2+(√7)^2=(3m)^2 怎么算

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{|3m-m|/√2}^2+(√7)^2=(3m)^2 怎么算
{|3m-m|/√2}^2+(√7)^2=(3m)^2 怎么算

{|3m-m|/√2}^2+(√7)^2=(3m)^2 怎么算
{|3m-m|/√2}^2+(√7)^2=(3m)^2
(2m)^2/2+7=9m^2
2m^2+7=9m^2
7m^2=7
m^2=1
m=±1

m-2m-3m+4m-5m-6m+7m.2004m=? m-2m-3m+4m-5m-6m+7m-8m-9m+...+2002m-2003m-2004m求m的值已知m＞4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3| 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 解2m-√4m²-2m-3 计算m(m+7)-(m+3)(m-2). m^2-7m-3 2m+3m+5m+7m+9m+…+2003m+2005m+2007m √(3m+1)(2-m)=√3m+1×√2-m成立时|m-4|√9m^2 6m+1+|m-2|化简化简求值:m^2-1/m+1-m√m^2-2m+1/m^2-m,其中m=2-√3 计算:(2m*7m*3m)/(-42)m.（m为正整数）m是次方计算：（m+3m+5m+...+2009m)-(2m+4m+6m+...+2008m) (m+3m+5m+...+2009m)-(2m+4m+6m+...2008m)