$$tind\ valve\ a^{\prime}a^{\prime}b^{\prime}i1+\frac{7+3\sqrt{5}}{3+\sqrt{5}}-\frac{7-3\sqrt{5}}{3-\sqrt{5}}=a+\sqrt{5}b$$
$y=\frac{11\left(76a-19\sqrt{5}-85\right)^{3}}{576}$
