<prompt> Pata nambari halisi chanya x ambayo kwayo5 sqrt1 x 5 sqrt1 - x 7 sqrt2.  <response>: Kutoka kwa equation iliyotolewa,sqrt1 x sqrt1 - x frac7 sqrt25.Kuweka pande zote mbili, tunapata1 x 2 sqrt1 - x2 1 - x frac9825,ambayo hurahisisha2 sqrt1 - x2 frac4825.Kugawanya pande zote mbili na 2, tunapatasqrt1 - x2 frac2425.Kuweka pande zote mbili tena, tunapata1 - x2 frac576625,hivyox2 frac49625.Thamani chanya ya x basi ni frac725. 