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 ( 94+ )
Otras preguntas
Order these numbers from least to greatest. 3.601, 3.6, 3.61, 2.4582
What is the geographical location of Europe?
simplify the equation below to determine whether there is one unique solution, no solution, infinitely many solutions. 3(6x + 8) = 24 + 18x
A marble is selected from a bag containing eight marbles numbered 1 to 8. The number on the marble selected will be recorded as the outcome. Consider the follow
Which of the following is TRUE of all bases?
Preview the following picture and predict the caption that would accompany it. Welcome to the environmental landfill a. You would be surprised where the trash g
HELP ASAP what is 485x937?
(HELP ASAP) Find the area of the composite figure. A) 27 km2 B) 36 km2 C) 45 km2 D) 54 km2
The limerick and the tongue twister are two types of _____ verse. A) Nonsense B) Articulation C) Interrogative D) Declarative
Which of the following scenarios would benefit from the use of the Wong- Baker FACES Pain Scale Chart? A. Thomas wants to determine whether a patient's pain is
