Question

Calcule
(Raiz de 3+2 raiz de 2) . (Raiz de 3 - 5 raiz de 2)

Answer 1

$( \sqrt{3} + 2 \sqrt{2}) * (\sqrt{3} - 5 \sqrt{2}) \\ \\ \\ \sqrt{3}^2 - 5 \sqrt{6} + 2 \sqrt{6} - 10*2 \sqrt{2}^2 \\ \\ \\ 3 - 5 \sqrt{6} + 2 \sqrt{6} - 10*2 \\ \\ 3 - 3 \sqrt{6} - 20 \\ \\ \\ => - 17 - 3\sqrt{6}$