SOLUTION: Solve in the complex number system. x^4=16

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Solve in the complex number system. x^4=16      Log On


   

Question 785975: Solve in the complex number system.
x^4=16
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
x^4=16
leads to
x^4-16=
(x^2+4)(x^2-4)=
(x+2i)(x-2i)(x+2)(x-2)
solution set:
{2, -2, 2i, -2i}