Question

$-\sqrt{8}*(-2)=?$
$\sqrt{13}*2 \sqrt{5}=?$
$\sqrt{ (\sqrt{3-2}) }=?$

Answer 1

ultima=1; pt ca 3-2=1 iar $\sqrt{1} = 1, iar \sqrt{ \sqrt{1}}=1$
iar prima = 2$\sqrt{8}$ =2 ·$2 \sqrt{2}$ = 4$\sqrt{2}$