9 pangkat 2x di kurang 1 sama dengan 27

Bab Ekpsonensial
Matematika SMP Kelas IX

^ = pangkat

9^(2x - 1) = 27
3^(2(2x - 1)) = 3³
3^(4x - 2) = 3³
4x - 2 = 3
4x = 3 + 2
x = 5/4

HP = { 5/4 }

BaB Eksponensial

9^2x-1 = 27
(3^2)^2x-1 = 3^3
3^(2×(2x-1))= 3^3
3^4x-2= 3^3
4x -2 = 3
4x=3 + 2
4x = 5
x = 5/4

Nilai X=5/4