Bonsoir,
On utilise les formules du cours.
[tex]F = 2\sqrt{32} - \sqrt{50}\\
F = 2\sqrt{16\times 2} - \sqrt{2\times 25}\\
F = 2\sqrt{16} \times \sqrt 2 - \sqrt {25} \times \sqrt 2\\
F = 2\times 4\times \sqrt 2 - 5\sqrt 2\\
F= 8\sqrt 2 - 5\sqrt 2\\
F = 3\sqrt 2[/tex]
[tex]G = 3\sqrt 2 \times 4\sqrt 3\\
G = 3\times 4 \times \sqrt 2 \times \sqrt 3\\
G = 12\sqrt{2\times 3}\\
G = 12\sqrt 6[/tex]
[tex]H = \sqrt{24}+\sqrt{54}\\
H = \sqrt{6\times 4}+\sqrt{6\times 9}\\
H = \sqrt 4 \times \sqrt 6 +\sqrt 9 \times \sqrt 6\\
H = 2\sqrt 6 +3\sqrt 6\\
H = 5\sqrt 6[/tex]
[tex]I = \sqrt{75}+\sqrt{12}-2\sqrt{48}\\
I = \sqrt{3\times 25} +\sqrt{3\times 4} -2\sqrt{3\times 16}\\
I = \sqrt{25}\times \sqrt 3 +\sqrt 4 \times \sqrt 3 -2\sqrt {16}\times \sqrt 3\\
I = 5\sqrt 3 +2\sqrt 3 -8\sqrt 3\\
I = -\sqrt 3[/tex]
Si tu as des questions, n'hésite pas! =)
