Question

Help 1)radical din 81 - radical din 144
2) radical dim 3 •(radical din3 -radical din 3-radical din2 ) +radical din 6

Answer 1

Spor in continuare !!

Answer 2

$1)~\sqrt{81}-\sqrt{144}=9-12=-3$
$2)~\sqrt{3}(\sqrt{3}-\sqrt{3}-\sqrt{2})+\sqrt{6}=$
$\sqrt{3}(-\sqrt{2})+\sqrt{6}=$
$-\sqrt{6}+\sqrt{6}=0$