Question

Tolong dijwb sama cranya a. log (x+2) +log4= log 8x b. ² log x + ²log(x-2)=3

Answer 1

A. Log (x+2) + Log 4 = Log 8x
Log (x + 2) x 4 = Log 8x
4x + 8 = 8x
4x = 8
x = 2

b. 2log x + 2 log (x-2) = 3
2 log x . (x-2) = 3
x^2 - 2x = 8
x^2 - 2x -8 =0
(x-4)(x+2) =0
x= 4 atau x = -2