5log2xpangkat2-5log(x+5)=1

jawab

5'log 2x^2  - 5'log (x +5) = 5'log 5

2x^2 = 5(x+5)
2x^2 = 5x + 25
2x^2 - 5x - 25=0
(2x  - 5)(x + 5) = 0
x=  5/2   atau x  = - 5
pembatas x > -5
x = 5/2