Whakaoti mō n
n=256-r^{2}
Whakaoti mō r
r=\sqrt{256-n}
r=-\sqrt{256-n}\text{, }n\leq 256
Tohaina
Kua tāruatia ki te papatopenga
r^{2}+n-256=0
Tātaihia te 16 mā te pū o 2, kia riro ko 256.
n-256=-r^{2}
Tangohia te r^{2} mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.
n=-r^{2}+256
Me tāpiri te 256 ki ngā taha e rua.
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