2^m*7^m*3^m / (-42)^m (m为奇数)
计算:(2m*7m*3m)/(-42)m.(m为正整数)
m-2m-3m+4m-5m-6m+7m.2004m=?
(m+3m5m+7m+.2009m)-(2m+4m+6m.2008m)
已知m>4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3|
(m+3m+5m+7m+.+2009m)-(2m-4m-6m-.-2008m)=?
(m+3m+5m+7m+.+2011m)-(2m+4m+6m+.+2010m) 要说理由!
m-2m-3m+4m-5m-6m+7m-8m-9m+.+2002m-2003m-2004m
M
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2m+3m+5m+7m+9m+…+2003m+2005m+2007m