已知m²-7m-1=0,求2m²-7m+1/m²=?

已知m²+2m+1=0,求m³+2m²+3m 已知m²+m-1=0,求m³+2m²+2012的值 已知m²+m-1=0,求m³+2m²-2005 已知m²+m-1=0,求m³+2m²+2003的值. 已知m²+m-1=0,求m³+2m²-2005的值 已知m²+m-1=0,求m³+2m²+2009的值 已知m²+m-1=0,求m³+2m²+2004的值 已知m²+m-1=0,求m³+2m²+2007旳值 已知,m²+m+1=0,求m³+2m+2013 已知：m²-m+1=0 求m³-2m+2012 已知m²+m=1,求m³+2m²+2011的值. 已知m+√ m²-2m+1=1 求m的取值范围