tentukan himpunan penyelesaian ³log²x - 9 × ³logx - 10 = 0

LogAritMa

Misal :
³log x = a

³log² x - 9 . ³log x - 10 = 0
a² - 9a - 10 = 0
(a - 10)(a + 1) = 0
a = 10 atau a = -1

³log x = 10 ---> x = 3^10
³log x = -1 ---> x = 3^-1

HP = {1/3 , 3^10}