\(\sqrt{4-2\sqrt{3}}\) = ?
\(\sqrt{3}-1\). \(1-\sqrt{3}\). \(2\sqrt{3}\). \(2\sqrt{3}-1\). Hướng dẫn giải:\(\sqrt{4-2\sqrt{3}}=\sqrt{3-2\sqrt{3}+1}=\sqrt{\left(\sqrt{3}\right)^2-2\sqrt{3}+1}\)\(=\sqrt{\left(\sqrt{3}-1\right)^2}=\left|\sqrt{3}-1\right|=\sqrt{3}-1\).