[tex] \frac{3}{2 \sqrt{3} } [/tex] [tex] \frac{2}{5 \sqrt{8} } [/tex] tolong jawab buat bsk please!

jawab

a.
3/ (2√3)= 
= 3(√3) / (2√3)(√3)
=  3√3 / (6)
=  1/2  √3

b. 
 2/  (5√8) =
= 2 (√8) / (5√8)(√8)
= 2 √8 / ( 40)
= (2/ 40) √4. √2
= 1/20 . 2 √2
= 2/20 √2
 = 1/10  √2