tolong bantuin kak no 5

[tex] \frac{4}{3 + \sqrt{2} } \times \frac{3 - \sqrt{2} }{3 - \sqrt{2} } \\ \frac{4(3 - \sqrt{2)} }{9 - 2} \\ \frac{4}{7} (3 - \sqrt{2)} [/tex]

maaf kalo nanti salah