1/4x^3-3/4x=-1/2.能帮我解出x吗

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 09:49:36

1/4x^3-3/4x=-1/2.能帮我解出x吗
1/4x^3-3/4x=-1/2.能帮我解出x吗

1/4x^3-3/4x=-1/2.能帮我解出x吗
1/4x^3-3/4x=-1/2
x^3-3x=-2
x^3-3x+2=0
x^3-1-3x+3=0
(x-1)(x^2+x+1)-3(x-1)=0
(x-1)(x^2+x+1-3)=0
(x-1)(x^2+x-2)=0
(x-1)(x-1)(x+2)=0
(x-1)^2(x+2)=0
x=1或x=-2

x=1 -1 2