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 ( 51+ )
Otras preguntas
help,.... Solve the volume formula V = lwh for h. a) [tex]h= \frac{V}{l}+w [/tex] b) [tex]h= \frac{lw}{V}[/tex] c) [tex]h= \frac{V}{lw}[/tex] d) [tex]h = Vlw[/
Darryl is reading a book at the rate of 4.5 pages pre minute. what ordered pair on a graph of his reading rate would represent the number of minutes it would ta
The Masim family's monthly budget is shown in the circle graph. The family has a monthly income of $5,000. How much money do they spend on food each month? Eme
what is the unit rate for 72:36
Which statement presents an unsound argument? Women are capable of working as firefighters because many are employed in cities across the United States. Women s
A car with mass 615 kg drives through an Arby's parking lot. What is the weight of the car? Isn't it just w=mg So, w=615 kg x9.8 m/s^2 w= 6,027 N
In Act II, Scene 1, of A Midsummer Night's Dream, who is speaking to whom in these lines? I will not stay thy questions; let me go Or, if thou follow me, do not
what layer, along with the crust, forms the solid tectonic plates
What is an emotional appeal? an appeal that addresses the reader’s feelings an appeal based on sound reasoning an appeal to authority that establishes credibili
Which word should not be hyphenated to fit on a line? A. charge B. automatic C. divided D. register
