x的平方-x-3=0(解方程)

2025-12-15 04:38:48
推荐回答(1个)
回答1:

x^2-x-3=0
x^2-x+1/4-1/4-3=0
(x-1/2)^2-13/4=0
(x-1/2-√13/2)(x-1/2+√13/2)=0
x=1/2+√13/2或x=1/2-√13/2