推 vicwk :y=5/x, x^2 - 25/x^2 = 24, x^4 - 24x^2 - 25 = 0 05/09 11:17
推 doa2 :或者利用(x^2-y^2)^2+4x^2y^2=(x^2+y^2)^2 05/09 11:18
→ vicwk :(x^2+1)(x^2-25)=0 05/09 11:18
→ sugar317 :了解 感謝各位! 05/09 11:23
推 justinj :這個..不是畢氐定理的東東嗎..x^2+y^2=26.. 05/11 20:18
→ justinj :x^2=25,y^2=1.. 05/11 20:18