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Ngā Raru Ōrite mai i te Rapu Tukutuku

Tohaina

\left(\sqrt{73}\right)^{2}-1^{2}
Ka taea te whakareanga te panoni ki te rerekētanga o ngā pūrua mā te ture: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
73-1^{2}
Ko te pūrua o \sqrt{73} ko 73.
73-1
Tātaihia te 1 mā te pū o 2, kia riro ko 1.
72
Tangohia te 1 i te 73, ka 72.