m²+4m-3m²-5m+6m²-2
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m²+4m-3m²-5m+6m²-2
m=-2分之三
m=-2分之三
![m²+4m-3m²-5m+6m²-2](/uploads/image/z/1647930-66-0.jpg?t=m%26%23178%3B%2B4m-3m%26%23178%3B-5m%2B6m%26%23178%3B-2)
原式=(6-3+1)m²+(4-5)m-2
=4m²-m-2
当m=-3/2时,
原式=4×(-3/2)²-(-3/2)-2
=4×9/4+3/2-2
=9+3/2-2
=8.5
=4m²-m-2
当m=-3/2时,
原式=4×(-3/2)²-(-3/2)-2
=4×9/4+3/2-2
=9+3/2-2
=8.5
m²+4m-3m²-5m+6m²-2
(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)=
计算2m+6/m²-4m+4·1/m+3·(m-2)(m+3)/m+3
(m+3m+5m+7m+.+2009m)-(2m-4m-6m-.-2008m)=?
(m+3m+5m+7m+.+2011m)-(2m+4m+6m+.+2010m) 要说理由!