doctest fix for wrong expansion of (x+sqrt(2)*x)^2

[rwst]

This bug was recently fixed in GiNaC:

sage: ((x+sqrt(2)*x)^2).expand()
2*sqrt(2)*x^2 + 2*x^2 + x^2

This ticket will wait for Pynac to catch up and add a Sage doctest for the case.

CC: @kcrisman

Component: symbolics

Author: Ralf Stephan

Branch/Commit: 4b77d29

Reviewer: Frédéric Chapoton

Issue created by migration from https://trac.sagemath.org/ticket/18568

[rwst]

Branch: u/rws/wrong_expansion_of__x_sqrt_2__x__2

[rwst]

Commit: 4b77d29

[rwst]

New commits:

4b77d29

18568: doctest fix for wrong expansion of (x+sqrt(2)*x)^2

[rwst]

Changed upstream from Fixed upstream, in a later stable release. to none

[fchapoton]

comment:5

lgtm

[fchapoton]

Reviewer: Frédéric Chapoton