解
(x+3)²-x(x+3)=0
(x+3)(x+3-x)=0
3(x+3)=0
∴x=-3
x²-2√5x+1=0
(x²-2√5x+5)=4
(x-√5)²=4
x-√5=2或x-√5=-2
x=2+√5
或x=-2+√5
解方程(x+3)²-x(x+3)=0 x²-2根号5x+1=0
解方程(x+3)²-x(x+3)=0 x²-2根号5x+1=0
(x+3)²-x(x+3)=0 x²-2根号5x+1=0
(x+3)²-x(x+3)=0 x²-2根号5x+1=0
数学人气：954 ℃时间：2019-12-26 04:30:19
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