m^2+2m-8 最小值 m^2+4m+6最小值 7-m^2+2m最小值三道题帮我做

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m^2+2m-8最小值m^2+4m+6最小值7-m^2+2m最小值三道题帮我做m^2+2m-8最小值m^2+4m+6最小值7-m^2+2m最小值三道题帮我做m^2+2m-8最小值m^2+4m+6最小值

m^2+2m-8 最小值 m^2+4m+6最小值 7-m^2+2m最小值三道题帮我做
m^2+2m-8 最小值 m^2+4m+6最小值 7-m^2+2m最小值
三道题帮我做

m^2+2m-8 最小值 m^2+4m+6最小值 7-m^2+2m最小值三道题帮我做
m²-2m-8
=m²-2m+1-9
=(m-1)²-9
(m-1)²>=0
(m-1)²-9>=-9
所以最小值=-9
m²+4m+6
=m²+4m+4+2
=(m+2)²+2
(m+2)²>=0
(m+2)²+2>=2
所以最小值=2
7-m²+2m
=-m²+2m-1+8
=-(m-1)²+8
(m-1)²>=0
-(m-1)²

因式分解（m+1）²-9
（m+2）²+2
8-（1-m）²可得最小值分别为-9，2，8

m是有理数,求|m-2|+|m-4|的最小值 m^2+2m-8 最小值 m^2+4m+6最小值 7-m^2+2m最小值三道题帮我做 m-2m-3m+4m-5m-6m+7m-8m-9m+...+2002m-2003m-2004m求m的值 设m是有理数,求f=|m-2|+|m-4|+|m-6|+|m-8|的最小值 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 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)=? 化简(m*m-2m)/(4-m*m) 4-m^2/(m+4)^2÷m-2/2m+8×m-2/m+2 求m^2-8m+9的最小值及取得最小值的时候m等于多少 计算（m^3)^4+m^10m^2+m*m^3*m^8