\(=\sqrt{\left(3\sqrt{2}-2\sqrt{3}\right)\left(3\sqrt{2}+2\sqrt{3}\right)}\)
\(=\sqrt{\left(3\sqrt{2}\right)^2-\left(2\sqrt{3}\right)^2}\)
\(=\sqrt{18-12}\)
\(=\sqrt{6}\)
\(\sqrt{3\sqrt{2}-2\sqrt{3}}\cdot\sqrt{3\sqrt{2}+2\sqrt{3}}\)
\(=\sqrt{18-12}\)
\(=\sqrt{6}\)