SOLUTION: x^3+1=0

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: x^3+1=0      Log On


   



Question 1038488: x^3+1=0
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
%28x%2B1%29%28x%5E2-x%2A1%2B1%5E2%29=0
%28x%2B1%29%28x%5E2-x%2B1%29=0

-
x=%281%2B-+sqrt%281%5E2-4%2A1%2A1%29%29%2F2
x=%281%2B-+sqrt%28-3%29%29%2F2
--------------------------------------------------
system%28x=%281-i%2Asqrt%283%29%29%2F2%2Cx=%281%2Bi%2Asqrt%283%29%29%2F2%29
OR
x=-1
--------------------------------------------------