\(1,=4\sqrt{2}+4\sqrt{2}-5\sqrt{2}=3\sqrt{2}\\ 2,=2\sqrt{3}-9\sqrt{3}+5\sqrt{3}=-2\sqrt{3}\\ 3,=5\sqrt{5}+7\sqrt{5}-8\sqrt{5}=4\sqrt{5}\\ 4,=\dfrac{\sqrt{5}\left(\sqrt{5}-\sqrt{3}\right)}{\sqrt{5}-\sqrt{3}}=\sqrt{5}\\ 5,=\sqrt{3}+\sqrt{2}-\sqrt{3}=\sqrt{2}\)
1) \(=4\sqrt{2}+4\sqrt{2}-5\sqrt{2}=3\sqrt{2}\)
2) \(=2\sqrt{3}-9\sqrt{3}+5\sqrt{3}=-2\sqrt{3}\)
3) \(=5\sqrt{5}+7\sqrt{5}-8\sqrt{5}=4\sqrt{5}\)
4) \(=\dfrac{\sqrt{5}\left(\sqrt{5}-\sqrt{3}\right)}{\sqrt{5}-\sqrt{3}}=\sqrt{5}\)
5) \(=\dfrac{\sqrt{3}+\sqrt{2}}{3-2}-\sqrt{3}=\sqrt{3}+\sqrt{2}-\sqrt{3}=\sqrt{2}\)
