[tex] \frac{7}{3 - \sqrt{2 } } = [/tex]

jawab

7 / ( 3 - √2) =

= 7 (3 + √2) / (3 - √2)(3+√2)
= 7(3+√2)/ (9-2)
= 7(3 + √2) / (7)
= 3 + √2

akar7/ 3 - akar2 x 3 + akar2/ 3 + akar2
= 21 akar2/9 - 2
= 21 akar2/7.