³logx + ³log(x+1) = ³log2

Bab Logaritma
Matematika SMA Kelas X

^ = pangkat

^3log x + ^3log (x + 1) = ^3log 2
^3log (x (x + 1)) = ^3log 2
x² + x = 2
x² + x - 2 = 0
(x + 2) (x - 1) = 0
x + 2 = 0
x = -2

x - 1 = 0
x = 1

x > 0

maka, x = 1