(1)M^2+M-3M^2-5M+2M^2+4=?(M=-3/4)(2)(A+B)^2-2(A+B)^2+3(A+B)^2=?(A=-2 B=1/3)(3)2/3A^2-6A^3+5A-1/4+5A^3-1/2-4/3A^2=?(A=-3)(4)5XY-3/2X^3Y^2-4XY+1/2X^3Y^2-1/2XY-3X^3Y^2-5=?(X=-1 Y=-2)(5)已知：2M^2N+2MN-3NM^2-3NM+43^2N 其中M是最小正整数,N是绝

m*m-5m-1=0则2m*m-5m+1/m*m 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-2m-3m+4m-5m-6m+7m.2004m=? (m+3m+5m.+2013m)-(2m+4m+6m+.+2012m)=? m-2m-3m+4m-5m-6m+7m-8m-9m+...+2002m-2003m-2004m求m的值 (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? 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!