ln(x+5)=ln(x+8) - ln(x+4) solve for x please

Question

solomonzelman · Answer

$\Large\color{blue}{ \bf ln(x+5)=ln(x+8) - ln(x+4)    }$

$\Large\color{blue}{ \bf ln(x+5)+ ln(x+4)=ln(x+8)     }$

$\Large\color{blue}{ \bf ln[~~(x+5)(x+4)~~]=ln(x+8)     }$

$\Large\color{blue}{ \bf ln[~~x^2+9x+20~~]=ln(x+8)     }$


$\Large\color{red}{ \bf x^2+9x+20=x+8     }$

solomonzelman · Answer

you got the rest, go for it .... :)

daryan · Answer

My answer choices are a) -10 and -2, b) -2, c) -2 and 8, d) -10 and 2

jdoe0001 · Answer

ahemm solve for "x"

solomonzelman · Answer

Starting from what I wrote in red.

1)    subtract x from both sides
2)    subtract 8 from both sides
3)    solve by            factoring/completing the square    (same thing)

you got this...

daryan · Answer

I get -2 and -6 but that is not in my possible choices