1)[tex]\sqrt{3-2\sqrt{2}}=\sqrt{(\sqrt{2}-1)^{2}}=\sqrt{2}-1[/tex]
6[tex]-4\sqrt{2}=(2-\sqrt{2})^{2}[/tex]
=>[tex]\sqrt{6-4\sqrt{2}}=2-\sqrt{2}[/tex]
kết quả pn tự tính nhé
2)[tex]\sqrt{2+\sqrt{3}}+\sqrt{2-\sqrt{3}}=\frac{1}{2}(\sqrt{4+2\sqrt{3}}+\sqrt{4-2\sqrt{3}})=\frac{1}{2}(\sqrt{3}+1+\sqrt{3}-1)=\sqrt{3}[/tex]
like giùm mk