Unreadable real solution for a very simple equation

[pelegm]

Try this (on 7.5.beta4):

sage: solve(x^3 == -8, x)
[x == I*sqrt(3)*(-1)^(1/3) - (-1)^(1/3), x == -I*sqrt(3)*(-1)^(1/3) - (-1)^(1/3), x == 2*(-1)^(1/3)]

The first solution is in fact -2. Looks horrible that way.

Sympy handles this well:

>>> solve(Eq(x**3, -8))
[-2, 1 - sqrt(3)*I, 1 + sqrt(3)*I]

Wolfram Alpha is also ok with this.

Component: symbolics

Keywords: solve

Reviewer: Frédéric Chapoton

Issue created by migration from https://trac.sagemath.org/ticket/22017

[rwst]

comment:1

Maybe related: #11941

[pelegm]

comment:2

Indeed, looks very much related. Should we flag this as a duplicate?

[rwst]

comment:3

Yes, you're right.

[fchapoton]

comment:5

duplicate, for sure

[fchapoton]

Reviewer: Frédéric Chapoton