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数学
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300/x-5=300/(x-2)怎么解
人气：192 ℃ 时间：2020-06-12 13:43:57
解答
化简为60/x-1=60/(x-2)
两边同乘x(x-2)得60(x-2)-x(x-2)=60x
化简得x^2-2x+120=0
所以(x-1)^2= -119
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