\(=\dfrac{2\sqrt{5}\left(\sqrt{5}+\sqrt{2}\right)}{\sqrt{5}+\sqrt{2}}+\dfrac{8\left(1+\sqrt{5}\right)}{1-5}\\ =2\sqrt{5}-\dfrac{8\left(1+\sqrt{5}\right)}{4}\\ =2\sqrt{5}-2\left(1+\sqrt{5}\right)\\ =2\sqrt{5}-2-2\sqrt{5}\\ =-2\)
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