x平方-根号5x+1=0
两边同除以x:
x-根号5+1/x=0
x+1/x=根号5
两边平方:
x^2 + 1/x^2 + 2 = 5
x^2 + 1/x^2 = 3
若X满足关系式x平方-根号5x+1=0,则x平方+x平方分之1=
若X满足关系式x平方-根号5x+1=0,则x平方+x平方分之1=
数学人气:168 ℃时间:2019-11-15 07:57:11
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