Question

va rog frumos urgent DAU COROANA
$7 - (8 - \sqrt{2} ) + 4 \sqrt{2} =$

Answer 1

$7 - (8 - \sqrt{2}) + 4 \sqrt{2} = \\ \\ 7 - 8 + \sqrt{2} + 4 \sqrt{2} = \\ \\ (7 - 8) + ( \sqrt{2} + 4 \sqrt{2}) = \\ \\ - 1 + 5 \sqrt{2}$