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nyebutnya kya gitu bisa jadi (2a/3a) + √5
kalau gt pke yang umum aja:
2a/(3a + √5)
= 2a/(3a + √5) x (3a - √5)/(3a - √5)
= (6a² - 2a√5) / (9a² - 5)
klo yg satunya:
(2a/3a) + √5
= 2/3 + √5
=(2a)(3a-√5)/(3a+√5)(3a-√5)
=6a²-2a√5/9a²-3a√5+3a√5-5
=6a²-2a√5/9a²-5