Question

корень 27у + корень 75у - корень 48у​

Answer 1

$\sqrt{27y} + \sqrt{75y} - \sqrt{48y} = \sqrt{9 \times 3y} + \sqrt{25 \times 3y} - \sqrt{16 \times 3y} = \\ \\ = 3 \sqrt{3y} + 5 \sqrt{3y} - 6 \sqrt{3y} = 2 \sqrt{3y}$