Question

2√5/√5-√3. СРОЧНО!!! ДАЮ 100БАЛЛОВ ААААА

Answer 1

$2 \times 1 - \sqrt{3} = 2 - \sqrt{3}$

Answer 2

$\frac{2\sqrt{5}}{\sqrt{5}-\sqrt{3}}=\frac{2\sqrt{5}*(\sqrt{5}+\sqrt{3})}{(\sqrt{5}-\sqrt{3})(\sqrt{5}+\sqrt{3})}=\frac{2*5+2\sqrt{15}}{5-3}=\frac{10+2\sqrt{15}}{2}=5+\sqrt{15}$