SOLUTION: The question says: Solve the equation in the complex number system. x^3 - 27 = 0 I'm not sure whether to factor or use quadratic equation.

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson  -> Lesson -> SOLUTION: The question says: Solve the equation in the complex number system. x^3 - 27 = 0 I'm not sure whether to factor or use quadratic equation.      Log On


   



Question 859448: The question says: Solve the equation in the complex number system.
x^3 - 27 = 0
I'm not sure whether to factor or use quadratic equation.

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 
Hi,
Take cube root of both sides:
x^3 - 27 = 0
x^3 = 27
root%283%2Cx%5E3%29+=+root%283%2C27%29
x = 3 |note: 3%2A3%2A3+=+27