人气:435 ℃ 时间:2020-01-28 00:47:52
解答
(1)2x+1+3x−1=6x2−1(x+1)(x-1)(2x+1+3x−1)=6(x−1)(x+1)×(x+1)(x-1),∴2(x-1)+3(x+1)=6,5x=5,解得:x=1,检验:当x=1时,(x+1)(x-1)=0,∴x=1不是原方程的解.∴原方程无解;(2)x−3x...
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