Your bug report

#51209: 29.0.50; Calc nroot error variable is void: 'math-nrf-n

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 51209@debbugs.gnu.org.

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51209: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=51209
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