Ikhyubhu, izimpande

2nd F kanye nenkinobho yokubuyisa kuyikhyubhu ka-x. Thayipha 8, cindezela u-second F, ikhyubhu ka-x, bese ucindezela ukulingana: 512.. Inkinobho yempande iyimpande yesikwele. Kunoma iyiphi enye impande, thayipha inkomba kuqala, bese 2nd F nenkinobho yamandla. Cindezela inkinobho yempande yesikwele, thayipha 49, cindezela umcibisholo wesokudla, bese ukususa. Thayipha 4, cindezela u-second F, impande ka-x, thayipha 81, bese ucindezela ukulingana. 49−814=\displaystyle \sqrt{49} - \sqrt[4]{81} = 4.. Futhi u-second F nenkinobho yempande yi-impande yekhyubhu. Thayipha 27 bese ucindezela ukulingana: 3..