Question

Tentukan HP dari 9log(3x^2 -x+6) - 3log(x+2) =0

Answer 1

9'log (3x² - x + 6) - 9'log (x² + 4x + 4) = 0
9'log (3x² - x + 6)/(x² + 4x + 4) = 0
(3x² - x + 6) / (x² + 4x + 4) = 1
3x² - x + 6 = x² + 4x + 4
2x² - 5x + 2 = 0
(2x - 1)(x - 2) = 0
x = 1/2 atau x = 2