Ngokwenjongo ephambili yokuyila iifomyula zerabha, iifomyula zinokwahlulwa zibe ziifomyula ezisisiseko, iifomyula zokusebenza, kunye neefomyula eziphathekayo.1, Ifomula esisiseko Ifomula esisiseko, ekwabizwa ngokuba yifomula esemgangathweni, iyilelwe ngokubanzi injongo yokuchonga irabha ekrwada kunye nezongezo.Wh...
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