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Ngā Raru Ōrite mai i te Rapu Tukutuku

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3\sqrt{2}-3\sqrt{2}
Tauwehea te 18=3^{2}\times 2. Tuhia anō te pūtake rua o te hua \sqrt{3^{2}\times 2} hei hua o ngā pūtake rua \sqrt{3^{2}}\sqrt{2}. Tuhia te pūtakerua o te 3^{2}.
0
Pahekotia te 3\sqrt{2} me -3\sqrt{2}, ka 0.