Question

23 и 24 срочно!!!!!!!!!

Answer 1

$\frac{(\sqrt{2+\sqrt{3}}+\sqrt{2-\sqrt{3}})^2}{(2+\sqrt{3})-(2-\sqrt{3})} =\\\\ =\frac{2+\sqrt{3}+2-\sqrt{3}+2\sqrt{(2-\sqrt{3})(2+\sqrt{3})}}{2\sqrt{3}} =\\\\ =\frac{4+2\sqrt{4-3}}{2\sqrt{3}} =\frac{6}{2\sqrt{3}} =\sqrt{3}$

24.

$\frac{3(\sqrt{7}+2)}{7-4} +\frac{2(\sqrt{7}+3)}{7-9} =\\\\ =\sqrt{7}+2-(\sqrt{7}+3) = 2 - 3 = -1$