tentukan nilai X, jika : 3 X + 1 = 81 X log 216 = 3 X log 81 = 4

LogAritMa

3^(x + 1) = 81
3^(x + 1) = 3^4
x + 1 = 4
x = 3
•
x'log 216 = 3
x'log 6^3 = 3
6^3 = x^3
x = 6
•
x'log 81 = 4
81 = x^4
3^4 = x^4
x = 3