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数学
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12/(4x²-1)+1=2x+3/1-2x
人气:194 ℃ 时间:2020-03-27 20:44:52
解答
12/(2x+1)(2x-1)+1=-(2x+3)/(2x-1)
两边乘(2x+1)(x-1)
12+4x²-1=-4x²-8x-3
8x²+8x+14=0
判别式小于0
无解
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