如何解方程x^3-3x^2-3x+1=0?求详解

2024-11-30 18:33:38
推荐回答(1个)
回答1:

解:x^3+x^2-(4x^2+3x-1)=x^2*(x+1)-(4x-1)(x+1)=(x+1)(x^2-4x+1)=0
则x=-1或x=2+sqrt(3)或x=2-sqrt(3)