Question

log(×+8)-log (×-1)=1

Answer 1

log (x+8) - log (x-1) = 1

log (x+8)/(x-1) = 1

(x+8)/(x-1) = 10¹

(x+8) = 10(x-1)

x + 8 = 10x - 10

8 + 10 = 10x - x

18 = 9x

x = 18/9

x = 2