Question

(5√32-4√18):(-2√8) =

Answer 1

$\sqrt{32}$ = 4$\sqrt{2}$
$\sqrt{18}$ = 3$\sqrt{2}$
$\sqrt{8} = 2 \sqrt{2}$
=> (5*$4 \sqrt{2}$-4*3$\sqrt{2}$):(-2*2$\sqrt{2}$ = 
     = [tex](20 \sqrt{2} - 12 \sqrt{2} ):(-4 \sqrt{2} ) = 8 \sqrt{2} :(-4 \sqrt{2} ) = -2[/tex]