bentuk sederhana dari 12/ 3-√5

=(12 (3+akar5))/3 - akar5 (3 + akar5)
=(36 + 12 akar5)/9-5
=(36 + 12 akar5)/4
= 9 + 3 akar5

semoga membantu

12/(3 - akar5) x (3 + akar5)/(3 + akar5)
= 12(3 + akar5)/9 -5
= (36 + 12akar5)/4
= 9 + 3akar5