数学若x满足x方-5x-1等于0 则x-1/x的值为多少

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数学若x满足x方-5x-1等于0则x-1/x的值为多少数学若x满足x方-5x-1等于0则x-1/x的值为多少数学若x满足x方-5x-1等于0则x-1/x的值为多少x²-5x-1=0x&sup

数学若x满足x方-5x-1等于0 则x-1/x的值为多少
数学若x满足x方-5x-1等于0 则x-1/x的值为多少

数学若x满足x方-5x-1等于0 则x-1/x的值为多少
x²-5x-1=0
x²-1=5x
两边除以x
x-1/x=5