jika 9 pangkat x-1 = 1/akar 3 maka nilai dari 4x + 6 =??

Bab Eksponensial
Matematika SMP kelas IX

9^(x - 1) = 1/√3
3^(2(x - 1)) = 3^(-1/2)
2x - 2 = -1/2
2x = 2 - 1/2
2x = 4/2 - 1/2
2x = 3/2
x = 3/4

4x + 6 = 4 . (3/4) + 6
           = 3 + 6
           = 9