" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(2x - 1)² > (3x + 2)²
4x² - 4x + 1 > 9x² + 12x + 4
0 > 9x² - 4x² + 12x + 4x + 3
5x² + 16x + 3 < 0
(5x + 1)(x + 3) < 0
x = -1/5 atau x = - 3
hp -3 < x < -1/5
≡ Penyelesaian:
⇒ |2x - 1| > |3x + 2|
⇒ (2x - 1)² > (3x + 2)²
⇒ 4x² - 4x + 1 > 9x² + 12x + 4
⇒ 0 > 5x² + 16x + 3
⇒ 5x² + 16x + 3 < 0
⇒ (x + 3)(5x + 1) < 0
∴ HP = -3 < x < -¹/₅ [Option C]