Question

Urgent
dau coroana . ​

Answer 1

$2( \sqrt{2} + 3) ^{2} - 4\sqrt{2} (3 - \sqrt{2} ) \\ 2(( \sqrt{2} ) ^{2} + 2 \times \sqrt{2} \times 3 + 3 ^{2} ) - 4 \sqrt{2} \times 3 + 4 \sqrt{2} \times \sqrt{2} \\ 2(2 + 6 \sqrt{2} + 9) - 12 \sqrt{2} + 4 \times 2 \\ 2(11 + 6 \sqrt{2} ) - 12 \sqrt{2} + 8 \\ 22 + 12 \sqrt{2} - 12 \sqrt{2 } + 8 \\ 22 + 8 = 30$