Tentukan himpunan penyelesaian dari persamaan logaritma berikut : 1. ²log x = 3 2.²log x +² log (2x-1) = 1

1. ²log x = 3
2^3 = x
x = 8

2. ²log x +² log (2x-1) = 1
²log (x . (2x - 1)) = 1
²log (2x^2 - x) = 1
2^1 = 2x^2 - x
2 = x^2 - x
x^2 - x - 2 = 0
(x-2)(x+1) = 0
•) x - 2 =0
x1 = 2
•) x + 1 = 0
x2 = -1