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数学
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用因式分解解方程：5x²-2x-1/4=x²-2x+3/4
人气：240 ℃ 时间：2020-04-08 06:53:54
解答
移项
4x²-1=0
(2x+1)(2x-1)=0
x=-1/2,x=1/2
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