<prompt> Kokotoa dfrac23-1231cdotdfrac33-1331cdotdfrac43-14 31cdotdfrac53-1531cdotdfrac63-1631.  <response>: Acha S iwe thamani ya usemi uliotolewa. Kwa kutumia jumla na tofauti ya cubes kwa factor, tunapata beginaligned S dfrac2-122212122- 21cdotdfrac3-132313132-31 cdotdfrac4-1 42414142-41cdotdfrac5-152515 152-51cdotdfrac6-162616162-61 frac13 cdot frac24 cdot frac35 cdot frac46 cdot frac57 cdot frac222122-21 cdot frac323132-31 cdot frac 424142-41 cdot frac525152-51 cdot frac626 162-61.endalignedDarubini ya kwanza ya bidhaa hadi tfrac1 cdot 26 cdot 7 tfrac121. Bidhaa ya pili pia darubini kutokana na utambulisho x2 x 1 x12 - x1 1.Yaani, masharti 2221 na 32-31 kughairi, kama vile masharti 3231 na 42-41, na kadhalika, ukiacha tu tfrac6261 22-21 tfrac433. Kwa hivyo, S frac121 cdot frac433 frac4363. 