4 per 5+ √3 [tex]4[/tex]

[tex] \frac{4}{5 + \sqrt{3} } \times \frac{5 - \sqrt{3} }{5 - \sqrt{3} } = \frac{4(5 - \sqrt{3)} }{25 - 3} = \frac{20 - 4 \sqrt{3} }{22} = \frac{10 - 2 \sqrt{3} }{11}[/tex]

semoga membantu ya.
ㅡ :)

Kelas 9 Matematika
Bab Akar dan Pangkat

4/(5 + √3)
= 4/(5 + √3) . (5 - √3)/(5 - √3)
= (20 - 4√3)/(5² - √3²)
= (20 - 4√3)/(25 - 3)
= (20 - 4√3)/22
= (10 - 2√3)/11