I try to Solve[x^2+x+1==0,x] and Solve[x^2-x+1==0,x] but it give me the same answers and both of them are wrong.(one is (-(-1)^(1/3)) and another is (-1)^(2/3)
I expect complex solutions instead of real number.
(I use Mathematica 4 for student)
Thank you for helping.