2(6+22)−23\sqrt{2}(\sqrt{6} + 2\sqrt{2}) - 2\sqrt{3}2(6+22)−23
12\sqrt{12}12 + 2 x 2 - 23\sqrt{3}3
2 3\sqrt{3}3 - 2 3\sqrt{3}3 + 4
= 4
