Question

Помогите пожалуйста даю 73 балла

Answer 1

$\displaystyle\bf\\1)\\\\\sqrt{\Big(3-\sqrt{5} \Big)^{2} } =\Big|3-\sqrt{5} \Big|=3-\sqrt{5} \\\\\\2)\\\\\sqrt{7+4\sqrt{3} } =\sqrt{4+4\sqrt{3} +3} =\sqrt{2^{2}+2\cdot2\cdot \sqrt{3} + \Big(\sqrt{3} \Big)^{2} } =\\\\\\=\sqrt{\Big(2+\sqrt{3}\Big)^{2} } =\Big|2+\sqrt{3} \Big|=2+\sqrt{3}$