bantu jawab no 37 beserta caranya

[tex] \frac{2}{3 + \sqrt{5} } \times \frac{3 - \sqrt{5} }{3 - \sqrt{5} } \\ = \frac{2(3 - \sqrt{5} )}{9 - 5} \\ = \frac{2(3 - \sqrt{5} )}{4} \\ = \frac{(3 - \sqrt{5} )}{2} \\ = \frac{1}{2} (3 - \sqrt{5} )[/tex]

Jadi, jawabannya D.

2 3 - √5
--------- x ----------
3 + √5 3 - √5

= 2(3 - √5)
-------------
9 - 5

= 2(3 - √5)
-------------
4

= 1 (3 - √5)
---
2