Template:Square root with defaults
Appearance
{{subst:subst}}square root with defaults|{{{1}}}|{{subst:#expr:{{subst:#ifeq:+|-|{{{2}}}|1}}/2+{{{1}}}/{{subst:#ifeq:+|-|{{{2}}}|1}}/2}}}}
{{subst:#ifeq:+|-|{{{2}}}|1}}
- Substituting this template produces one or more new substitution template calls, allowing recursive change of a page, see Help:Recursive conversion of wikitext.