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(2013x)²-2012*2014x-1=0
人气:330 ℃ 时间:2020-03-07 07:57:21
解答
(2013x)²-2012*2014x-1=0
(2013x)²-(2013²-1)x-1=0
(2013²x+1)(x-1)=0
x=-1/2013²或x=1
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