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Đọc tiếp
Tính
1) \(\sqrt{6+3\sqrt{3}}-\sqrt{14-3\sqrt{3}}-2\sqrt{2}\)
2)\(\sqrt{11+4\sqrt{6}}-\sqrt{5-2\sqrt{6}}\)
3) \(\sqrt{\frac{2+\sqrt{3}}{2}}-\frac{\sqrt{3}}{2}\)
4) \(\sqrt{21+3\sqrt{48}}+\sqrt{21-3\sqrt{48}}\)
5) \(\frac{7-4\sqrt{3}}{\sqrt{2-\sqrt{3}}}\sqrt{2+\sqrt{3}}\)
6) \(\left(2\sqrt{5}.\sqrt{2}-3\sqrt{40}+\sqrt{90}:3\right):\sqrt{640}\)
7) \(3\sqrt{2a}-\sqrt{18a^3}+4\sqrt{\frac{a}{2}}-\frac{1}{4}\sqrt{128a}\left(a\ge0\right)\)
giúp em với ạ
