\(=\dfrac{\sqrt{5}\left(\sqrt{5}+2\right)}{\sqrt{5}}+\dfrac{\left(1+\sqrt{3}\right)\sqrt{3}}{1+\sqrt{3}}-5-\sqrt{5}\)\(=\sqrt{5}+2+\sqrt{3}-5-\sqrt{5}\) \(=-3+\sqrt{3}\)Câu trả lời: \(=\dfrac{\sqrt{5}\left(\sqrt{5}+2\right)}{\sqrt{5}}+\dfrac{\left(1+\sqrt{3}\right)\sqrt{3}}{1+\sqrt{3}}-5-\sqrt{5}\)\(=\sqrt{5}+2+\sqrt{3}-5-\sqrt{5}\) \(=-3+\sqrt{3}\)