200x-100x^2=80
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解决时间 2021-11-26 00:24
- 提问者网友:浪荡绅士
- 2021-11-25 15:22
200x-100x^2=80
最佳答案
- 五星知识达人网友:拾荒鲤
- 2021-11-25 15:53
100x2-200x=62 100x2-200x+100=162 100(x-1)2=162 (x-1)2=162/100 x-1=9√2/10或x-1=-9√2/10 x=(10+9√2)/10或x=(10-9√2)/10
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- 1楼网友:一秋
- 2021-11-25 16:49
200x-100x^2=80
5x^2-10x+4=0
5(x-1)^2 = 1
x-1 = √5/5 or -√5/5
x= (5+√5)/5 or (5-√5)/5
5x^2-10x+4=0
5(x-1)^2 = 1
x-1 = √5/5 or -√5/5
x= (5+√5)/5 or (5-√5)/5
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