Aromātai
70\sqrt{6}\approx 171.464281995
Tohaina
Kua tāruatia ki te papatopenga
2\times 5\sqrt{7}\sqrt{3}\sqrt{2}\sqrt{7}
Tauwehea te 21=7\times 3. Tuhia anō te pūtake rua o te hua \sqrt{7\times 3} hei hua o ngā pūtake rua \sqrt{7}\sqrt{3}.
2\times 5\times 7\sqrt{2}\sqrt{3}
Whakareatia te \sqrt{7} ki te \sqrt{7}, ka 7.
10\times 7\sqrt{2}\sqrt{3}
Whakareatia te 2 ki te 5, ka 10.
70\sqrt{2}\sqrt{3}
Whakareatia te 10 ki te 7, ka 70.
70\sqrt{6}
Hei whakarea \sqrt{2} me \sqrt{3}, whakareatia ngā tau i raro i te pūtake rua.
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