已知m^2-5-1=0,则2m^2-5m+1/m^2=?
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已知m^2-5-1=0,则2m^2-5m+1/m^2=?已知m^2-5-1=0,则2m^2-5m+1/m^2=?已知m^2-5-1=0,则2m^2-5m+1/m^2=?式子写错了吧?应该是m^2-5m
已知m^2-5-1=0,则2m^2-5m+1/m^2=?
已知m^2-5-1=0,则2m^2-5m+1/m^2=?
已知m^2-5-1=0,则2m^2-5m+1/m^2=?
式子写错了吧?应该是m^2-5m-1=0吧?
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已知m^2-5m-1=0,求2m^2-5m+(1/m)这道题能做吗