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(x-1)²-2(x-1)+1/2=0 一元二次方程求过程急!
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(x-1)²-2(x-1)+1/2=0 一元二次方程求过程急!
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答案和解析
配方法:
(x-1)²-2(x-1)+1=1/2
(x-1-1)²=1/2
(x-2)²=1/2
x-2=±√2/2
x=2±√2/2
(x-1)²-2(x-1)+1=1/2
(x-1-1)²=1/2
(x-2)²=1/2
x-2=±√2/2
x=2±√2/2
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