" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
³log (x+1) + ³log (x+4) = ³log (x+9)
³log ((x+1)(x+4)) = ³log (x+9)
³log (x²+5x+4) = ³log (x+9)
x²+5x+4 = x+9
x²+5x+4-x-9 = 0
x²+4x+-5 = 0
(x+5)(x-1) = 0
x+5=0 atau x-1=0
x=-5 atau x=1
untuk x negatif, log tidak trdefinisi, maka HPnya x=1