[tex] \frac{ \sqrt{5} - 3 }{ \sqrt{5 + 3} } [/tex] penyelesaian

jawab

(√5  - 3) / (√ 5 + 3) =

= (√5 - 3 )(√5- 3)/ (√5 + 3)(√5 - 3)
= (5 + 9 - 6√5)/(5-9)
= (14 - 6√5)/ (-4)
= 2(7 - 3√5)/ 2(-2)
= - 1/2 (7 - 3√5)