Question

$( 2 \sqrt{2} + \sqrt{8} + \sqrt{18} ) : \sqrt{2} =$

Answer 1

2rad 2 +2 rad 2+3 rad 2= 7 rad 2 
7 rad 2 / rad 2 = 7

Answer 2

$(2 \sqrt{2}+ \sqrt{8} + \sqrt{18} ): \sqrt{2} = \\ (2 \sqrt{2}+ 2\sqrt{2} + 3\sqrt{2 }):\sqrt{2}= \\ 7 \sqrt{2} : \sqrt{2} =7$