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7\times 2\sqrt{15}
Tauwehea te 60=2^{2}\times 15. Tuhia anō te pūtake rua o te hua \sqrt{2^{2}\times 15} hei hua o ngā pūtake rua \sqrt{2^{2}}\sqrt{15}. Tuhia te pūtakerua o te 2^{2}.
14\sqrt{15}
Whakareatia te 7 ki te 2, ka 14.