# Revision history [back]

### About roots of a certain polynomial equation

Why is this calculation not reproducible on Sage?

http://www.wolframalpha.com/input/?i=roots+[++%28x^2+-+6.00000000000000%29x^2+-+4x%28e^%282%2F5Ipi%29+%2B+e^%28-2%2F5Ipi%29%29+-+e^%284%2F5Ipi%29+-+e^%28-4%2F5I*pi%29+-+1+]

### About roots of a certain polynomial equation

Why is Sage hanging up trying to find roots of this calculation not reproducible on Sage?equation?

http://www.wolframalpha.com/input/?i=roots+[++%28x^2+-+6.00000000000000%290 = (x^2 - 6.00000000000000)x^2+-+4x^2 - 4x%28e^%282%2F5(e^(2/5Ipi%29+%2B+e^%28-2%2F5pi) + e^(-2/5Ipi%29%29+-+e^%284%2F5pi)) - e^(4/5Ipi%29+-+e^%28-4%2F5pi) - e^(-4/5I*pi%29+-+1+]I*pi) - 1

 3 No.3 Revision tmonteil 23843 ●26 ●172 ●438 http://wiki.sagemath.o...

### About roots of a certain polynomial equation

Why is Sage hanging up trying to find roots of this equation?

0 = (x^2 - 6.00000000000000)x^2 6.00000000000000)*x^2 - 4x(e^(2/5Ipi) 4*x*(e^(2/5*I*pi) + e^(-2/5Ipi)) e^(-2/5*I*pi)) - e^(4/5Ipi) e^(4/5*I*pi) - e^(-4/5I*pi) e^(-4/5*I*pi) - 1 1

 4 retagged tmonteil 23843 ●26 ●172 ●438 http://wiki.sagemath.o...

### About roots of a certain polynomial equation

Why is Sage hanging up trying to find roots of this equation?

0 = (x^2 - 6.00000000000000)*x^2 - 4*x*(e^(2/5*I*pi) + e^(-2/5*I*pi)) - e^(4/5*I*pi) - e^(-4/5*I*pi) - 1