m*m-5m-1=0则2m*m-5m+1/m*m
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m*m-5m-1=0则2m*m-5m+1/m*mm*m-5m-1=0则2m*m-5m+1/m*mm*m-5m-1=0则2m*m-5m+1/m*mm*m-5m-1=0---->m-(1/m)=5(1)2
m*m-5m-1=0则2m*m-5m+1/m*m
m*m-5m-1=0则2m*m-5m+1/m*m
m*m-5m-1=0则2m*m-5m+1/m*m
m*m-5m-1=0 ---->m-(1/m)=5 (1)
2m*m-5m+1/m*m
=m*m-5m+m*m+1/(m*m)
=(m-1/m)^2+3 由1得
=28
2m*m-5m+1/m*m=m*m-5m+1/m*m +m*m=1+1/m*m +m*m=(m-1/m)^2+3=
【(m*m-1)/m】^2+3=(5m/m)^2+3=28
m*m-5m-1=0则2m*m-5m+1/m*m
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