Question

Merasionalkan bentuk akar.

5 / 3 + √5 =

Answer 1

Verified answer

Bab Rasionalisasi Penyebut
Matematika SMP Kelas IX

5/(3 + √5) = (5/(3 + √5)) . (3 - √5)/(3 - √5)
                 = (15 - 5√5)/(3² - √5²)
                 = (15 - 5√5)/(9 - 5)
                 = (15 - 5√5)/4
                 = (1/4) . (15 - 5√5)