Question

СПС ЗА РАНЕЕ (:::::::::::::::​

Answer 1

$\frac{2}{5} \sqrt{75} + \sqrt{2} ( \sqrt{2} - \sqrt{6} ) = \\ = 2 \sqrt{3} + 2 - \sqrt{12} = \\ = 2 \sqrt{3} + 2 - 2 \sqrt{3} = 2$