" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(3 + 2x)² < (4 - x)²
9 + 12x + 4x² < 16 - 8x + x²
4x² - x² + 12x + 8x + 9 - 16 < 0
3x² + 20x - 7 < 0
(3x - 1) (x + 7) < 0
x = 1/3 atau x = -7
garis bilangan:
uji x = 0 --> hasilnya bil - , maka tengah -
+++++ - - - - - - +++++
-7 1/3
karena tanda < maka penyelesaian yg -
Hp = {x | -7 < x < 1/3, x ∈ bil Real }
semoga membantu ya :)