2)14(1+\sqrt{31})+(7-\sqrt{31})^{2}
3) 2\sqrt{3}(\sqrt{12}+3\sqrt{5})-\sqrt{5}(6\sqrt{3}-\sqrt{20})
4)\sqrt{6}(0,5\sqrt{24}-8\sqrt{11})-4\sqrt{11}(\sqrt{99}-2\sqrt{6})" alt="1)(11-\sqrt{17})(11+\sqrt{17})
2)14(1+\sqrt{31})+(7-\sqrt{31})^{2}
3) 2\sqrt{3}(\sqrt{12}+3\sqrt{5})-\sqrt{5}(6\sqrt{3}-\sqrt{20})
4)\sqrt{6}(0,5\sqrt{24}-8\sqrt{11})-4\sqrt{11}(\sqrt{99}-2\sqrt{6})" align="absmiddle" class="latex-formula">