" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x² - 4 = (x + 2)(x - 2)
Kedua penyebut tidak memiliki faktor yang sama sehingga harus dikalikan.
3 / (x² + 7x + 12) - 2 / (x² - 4)
= 3 (x² - 4) / (x² + 7x + 12)(x² - 4) - 2 (x² + 7x + 12) / (x² + 7x + 12)(x² - 4)
= (3x² - 12) / (x² + 7x + 12)(x² - 4) - (2x² + 14x + 24) / (x² + 7x + 12)(x² - 4)
= (3x² - 12 - 2x² - 14x - 24) / (x² + 7x + 12)(x² - 4)
= (x² - 14 x - 36) / (x² + 7x + 12)(x² - 4)