Question

Resolva as equações:

a)log(2x+3)-log(x-1)=3
2 2
b)log(x²-3x+2)-log(x-2)=log(8-2x)

c)log(x+2)+co log(5x-7)=log(x-2/3)
3 3

Answer 1

$log(a)-log(b)=log( \frac{a}{b}) \\ log(\frac{2x+3}{3})=3 \\ 10^3=\frac{2x+3}{3} \\ 3000=2x+3 \\ 2007=2x \\ x=1003,5$