9^x-4.3^x+1+27 = 0 tolongg bantuu besok dikumpulkann

EksPonenSiaL

9^x - 4 . 3^(x + 1) + 27 = 0
(3^x)² - 4 . 3 (3^x) + 27 = 0

Misal :
3^x = a

a² - 12a + 27 = 0
(a - 3)(a - 9) = 0
a = 3 atau a = 9

a = 3
3^x = 3 ---> x = 1

a = 9
3^x = 9 ---> x = 2

NiLai x yg memenuhi :
x = 1 dan x = 2