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Tohaina

v=\sqrt{164}
Tāpirihia te 100 ki te 64, ka 164.
v=2\sqrt{41}
Tauwehea te 164=2^{2}\times 41. Tuhia anō te pūtake rua o te hua \sqrt{2^{2}\times 41} hei hua o ngā pūtake rua \sqrt{2^{2}}\sqrt{41}. Tuhia te pūtakerua o te 2^{2}.