Muchidzidzo masvomhu, mudzi wechi n we nhamba iri kumurirwa na x (nth root of a number), inhamba inomirirwa na r, yokuti kana yaradanurwa padanho n, zvinoenzana na x. Hukama uhwu hunonyorwa sezvizvi, r n = x , {\displaystyle r^{n}=x,} apa n anenge ari munongedzo remudzi wacho. Mudzi wepiri unenge une munongedzo wa 2, mudzi wechitatu unenge une munongedzo wa 3, mudzi wemakumi maviri unenge une munongedzo wa 20, zvichingodaro. Somuenzaniso: 2 mudzi wepiri wa 4, nokuti 22 = 4. −2 mudzi wepiri wa 4, nokuti (−2)2 = 4. 9 mudzi wepiri wa 81, nokuti 92 = 81. −9 mudzi wepiri wa 81, nokuti (−9)2 = 81. Mudzi wenhamba unowanza kunyorwa kuchishandiswa chiratidzo {\displaystyle {\sqrt {\,\,}}} kana √ {\displaystyle \surd {}} , kana x {\displaystyle {\sqrt {x}}\!\,} kana √ x {\displaystyle \surd x} kureva mudzi wepiri.