tolong dijawab dong ???

Caranya

[tex] \frac{4}{3 + \sqrt{2} } x \frac{3 - \sqrt{2} }{3 - \sqrt{2} } [/tex]
= [tex] \frac{4 (3 - \sqrt{2}) }{9 - 2} [/tex]
= [tex] \frac{4}{7} [/tex] (3 - √2)  {C}


Semoga Bemanfaat :)