[tex]A=(5 - 3\sqrt{6})^2 = 25 - 30\sqrt{6} + 54 = 79 - 30\sqrt{6}\\ B=(3\sqrt{2}-1)(7\sqrt{2}+1) = 42 + 3\sqrt{2} - 7\sqrt{2} - 1 = 41 - 4\sqrt{2}\\ C=(2\sqrt{7}+3\sqrt{5})^2 = 28 + 12\sqrt{35}+45 = 73 + 12\sqrt{35}\\ D=2\sqrt{6} - 5(\sqrt{6}+4) = 2\sqrt{6} - 5\sqrt{6} - 20 = -3\sqrt{6} - 20\\ E=(\sqrt{5}+3)(\sqrt{5}-3) = 5 - 9 = -4\\[/tex]
En espérant t'avoir aidé.
