`c)\sqrt{11+4\sqrt{6}}`
`=\sqrt{(\sqrt{8}+\sqrt{3})^2}`
`=\sqrt{8}+\sqrt{3}`
`=2\sqrt{2}+\sqrt{3}`
`d)\sqrt{14-6\sqrt{5}}`
`=\sqrt{(3-\sqrt{5})^2}`
`=3-\sqrt{5}`
`e)\sqrt{22-8\sqrt{6}}`
`=\sqrt{(4-\sqrt{6})^2}`
`=4-\sqrt{6}`
`f)\sqrt{16-6\sqrt{7}}`
`=\sqrt{(3-\sqrt{7})^2}`
`=3-\sqrt{7}`
`g)\sqrt{9-4\sqrt{2}}`
`=\sqrt{(\sqrt{8}-1)^2}`
`=\sqrt{8}-1`
`=2\sqrt{2}-1`
`h)\sqrt{13-4\sqrt{3}}`
`=\sqrt{(\sqrt{12}-1)^2}`
`=\sqrt{12}-1`
`=2\sqrt{3}-1`
`i)\sqrt{7-4\sqrt{3}}`
`=\sqrt{(2-\sqrt{3})^2}`
`=2-\sqrt{3}`
