Question

1/4x^3-3/4x=-1/2.能帮我解出x吗

Answer 1

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