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A cikin wannan ɗaba'ar, za mu yi la'akari da yadda ake shigar da lamba (mai yawa) ko wasiƙa a ƙarƙashin alamar murabba'i da manyan iko na tushen. Bayanin yana tare da misalai masu amfani don kyakkyawar fahimta.
Doka don shigarwa ƙarƙashin alamar tushen
Tushen square
Don kawo lamba (factor) a ƙarƙashin alamar tushen murabba'in, ya kamata a ɗaga shi zuwa ƙarfin na biyu (a wasu kalmomi, squared), sannan rubuta sakamakon a ƙarƙashin alamar tushen.
Misali 1: Bari mu sanya lamba 7 a ƙarƙashin tushen murabba'in.
Yanke shawara:
1. Da farko, bari mu daidaita lambar da aka bayar:
2. Yanzu kawai mu rubuta lambar ƙididdiga a ƙarƙashin tushen, watau muna samun √49.
A taƙaice, ana iya rubuta gabatarwar da ke ƙarƙashin alamar tushen kamar haka:
lura: Idan muna magana ne game da mai yawa, muna ninka shi ta hanyar magana mai tsattsauran ra'ayi da ta riga ta kasance.
Misali 2: wakiltar samfurin 3√5 gaba daya a karkashin tushen digiri na biyu.
tushen nth
Don kawo lamba (factor) a ƙarƙashin alamar cubic da iko mafi girma na tushen, muna tayar da wannan lambar zuwa matakin da aka ba, sa'an nan kuma canja wurin sakamakon zuwa magana mai mahimmanci.
Misali 3: Bari mu sanya lamba 6 a ƙarƙashin tushen cube.
Misali 4: tunanin samfur 25√3 karkashin tushen digiri na 5.
Lambar mara kyau/mai yawa
Lokacin shigar da lambar mara kyau / mai yawa a ƙarƙashin tushen (komai wane digiri), alamar cirewa koyaushe ta kasance a gaban alamar tushen.
Misali 5
Shigar da harafi a ƙarƙashin tushen
Don kawo harafi a ƙarƙashin alamar tushen, muna ci gaba kamar yadda tare da lambobi (ciki har da marasa kyau) - muna ɗaga wannan harafin zuwa matakin da ya dace, sa'an nan kuma ƙara shi zuwa tushen magana.
Misali 6
Wannan gaskiya ne lokacin
Misali 7
Mu yi la'akari da wani lamari mai rikitarwa:
Yanke shawara:
1. Da farko, za mu shigar da magana a cikin maƙallan ƙarƙashin alamar tushen.
2. Yanzu bisa ga za mu tayar da magana
lura: ana iya musanya matakan farko da na biyu.
3. Ya rage kawai don yin ninkawa a ƙarƙashin tushen tare da fadada maƙallan.
