[tex]a) \\ \sqrt{2}+3=1,4142...+3=4,4142... \\ b) \\ \frac{\sqrt{48}}{\sqrt{3}}=\sqrt{\frac{48}{3}}=\sqrt{16}= 4[/tex]
[tex]c) \\ (\sqrt{2}+\sqrt{3})(\sqrt{8}-\sqrt{12})=(\sqrt{9,898979...}})(\sqrt{2^{3}}-\sqrt{2^{2}*3})=[/tex][tex](\sqrt{9,898979...})(2\sqrt{2}-3\sqrt{2})[/tex]
