x²-x=1方程怎么解?
x^2-x=1
x^2-x+1/4=1+1/4
(x-1/2)^2=5/4
x-1/2=±√5/2
x=(1±√5)/2
x²-x=1
x²-x-1=0
(x-0.5)²-2=0
(x-0.5)²=2
x-0.5=±2^0.5
x=0.5±2^0.5
注:2^0.5是2开平方根,也就是2的1/2次方
x²-x=1
x²-x+1/4=1+1/4
(x-1/2)²=5/4
x=1/2+√5/2或x=1/2-√5/2
x²-x=1
x²-x+1/4=1+1/4
(x-1/2)²=5/4
x-1/2=√5/2
x=(1+√5)/2
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