已知m^2-5m-1=0,则2m^2-5m+1/2m^2
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已知m^2-5m-1=0,则2m^2-5m+1/2m^2已知m^2-5m-1=0,则2m^2-5m+1/2m^2已知m^2-5m-1=0,则2m^2-5m+1/2m^22m^2-5m+1/2m^2=(
已知m^2-5m-1=0,则2m^2-5m+1/2m^2
已知m^2-5m-1=0,则2m^2-5m+1/2m^2
已知m^2-5m-1=0,则2m^2-5m+1/2m^2
2m^2-5m+1/2m^2 =(m^2+m^2-5m-1)/2m^2=m^2/2m^2=1/2
m*m-5m-1=0则2m*m-5m+1/m*m
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已知m^2-5m-1=0,则2m^2-5m+1/2m^2
已知m^2-5m-1=0,则2m^2-5m+1/m^2=?
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已知m^2-5m-1=0,2m^2-5m+1/m^2=?
已知m^2-5m-1=0,求2m^2-5m+(1/m)这道题能做吗