bentuk sederhana (4√7-2)(3√7+5) adalah

jawab

Rasional

(4√7 -  2) / (3√7  + 5) =

= (4√7 - 2 )(3√7 - 5) / (3√7 + 5)(3√7 - 5)

= (12. 7 - 20. √7 - 6√7 + 10) / (9.7 - 5.5)

= (84 +10 - 26 √7)/ (63 - 25)

= (94 - 26√7)/ (38)

= 2 (47 - 13√7) / 2 (19)

= (47 - 13√7) / (19)