若实数ab满足1/a-1/b-1/a+b=0,则b²/a²-a²/b²的值等于____
若实数ab满足1/a-1/b-1/a+b=0,则b²/a²-a²/b²的值等于____
数学人气：416 ℃时间：2020-02-04 21:04:31
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首先把你发的题改一下,否则我觉得不太对劲!应该是若实数ab满足1/a-1/b-1/(a+b)=0,则b²/a²-a²/b²的值等于____首先,由1/a-1/b-1/(a+b)=0,1/a-1/b=1/(a+b) 左式通分(b-a)/ab=1/(...
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