x=514+5−14,y=514−5−14x=5^{\frac14} +5^{-\frac14}, y=5^{\frac14} -5^{-\frac14}x=541+5−41,y=541−5−41
x2=512+5−12+2y2=512+5−12−2x2−y2=4(x2−y2)2=165(x2−y2)2=80x^2=5^{\frac12} +5^{-\frac12}+2\\ y^2=5^{\frac12} +5^{-\frac12}-2\\ x^2-y^2=4\\ (x^2-y^2)^2=16\\ 5(x^2-y^2)^2=80x2=521+5−21+2y2=521+5−21−2x2−y2=4(x2−y2)2=165(x2−y2)2=80
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