SOLUTION: Please help me solve this equation: x^8-20x^4+64=0

Question 730422: Please help me solve this equation: x^8-20x^4+64=0
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

Let
and

( just figured it out )

and

-------------
Solving for ,
(1)
(2)
(3)
(4)
----------------
(5)
(6)
(7)
(8)
The 8 roots are labeled (1) - (8)
---------------------------
I'll check one of them
(4)

OK
You can check the rest

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