解方程 1/2（2x-1）²-32=0 3x²+4x+1=0
人气：297 ℃ 时间：2019-12-23 08:16:04
解答
1/2（2x-1）²-32=0
(2x-1)²=64
2x-1=8或2x-1=-8
x=9/2或x=-7/2
3x²+4x+1=0
（3x+1）（x+1）=0
x=-1/3或x=-1
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