已知m^2-5m-1=0,则2m^2-5m+1/2m^2
已知m²-5m-1=0,z则2m²-5m+1/m²=?
已知m²-5m=0,则2m²-5m+1/m²=
(1m+3m+5m+...+2009m)-(2m+4m+6m+...=2008m)
m-2m-3m+4m-5m-6m+7m.2004m=?
(m+3m+5m.+2013m)-(2m+4m+6m+.+2012m)=?
(m+3m+5m+...+2015m)-(2m+4m+6m+...+2014m)=
已知m²+2m+1=0,求m³+2m²+3m
已知m>4,化简|m-4|+|7-2m|+|m×m-2m+1|-|m×m-2m-3|
已知:2m-5n=0 求下式的值 (1+n/m-m/m-n)/(1+n/m-m/m-n)
已知2m-5n=0,求值:(1+n/m-m/m-n)÷(1-n/m-m/m+n)
已知m^2+m-1=0,求代数式m^3+5m^2+3m-2012的值
化简|6-m|-|2m+1|+|m+5| (m