jhernandez5167
jhernandez5167
02-02-2015
Mathematics
contestada
solve for x
log(x–4)+log(x+3)=2logx
Respuesta :
konrad509
konrad509
02-02-2015
[tex]D:x-4>0 \wedge x+3>0 \wedge x>0\\ D:x>4 \wedge x>-3 \wedge x>0\\ D:x>4\\\\ \log(x-4)+\log(x+3)=2\log x\\ \log(x-4)(x+3)=\log x^2\\ (x-4)(x+3)=x^2\\ x^2+3x-4x-12=x^2\\ -x=12\\ x=-12\\ -12\not\in D\\ \Downarrow\\ \boxed{x\in\emptyset}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 15+ )
Otras preguntas
Who was the Baseball player who turned into a Christian Evangelist ?
what is a synonym for a person who is an instrument
Who changed Rome from a republic to an empire after the Senate gave him power? A. Nero B. Caesar Augustus C. Diocletian D. Julius Caesar
five sixths plus one twelfths
Henry is considering purchasing a mountain bike. He likes two bikes: one costs $500, and other costs $600. He tells his dad that the bike is more expensive is m
PLEASE HELP! Which of the following leaders would have supported Geary in his campaign? Andrew Johnson Thaddeus Stevens Abraham Lincoln Ulysses S. Grant ANSWER
which fraction is bigger 1/3 or 2/6. Explain
Atomic Theory is A- subject to change if new information is discovered. B- a solution to the problem of differing isotopes. C- Unchangeable D- a descriptive tab
Ethos assures your reader or audience that you have?
By the 1920s, which of the following groups had achieved most of its goals? Native Americans Women suffragists African Americans labor unions
