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 ( 85+ )
Otras preguntas
why does electrical energy have the least amount of waste? Explain in detail please
Which type of graph gives the most information about how the position of a moving object changes relative to a reference point? A. speed-time B. acceleration-ti
In her poem, "The Adversary," Phyllis McGinley includes these lines, Life is the fruit she longs to hand you, Ripe on a plate Which sentence provides the BEST i
will name brainliest
A truck contains both hydraulic brakes (reliability 0.96) and mechanical brakes (reliability 0.99). What is the probability of stopping the truck (i) while movi
Please someone help me I need help with them give me the answer please
How many degrees is the rotation below? * •90 degrees counter clockwise •180 degrees •270 degrees counter clockwise •360 degreees
An equation is shown. 5.25 - 1.75 + c = 9.25 What value of c makes the equation true? * 2 points A. 12.75 B. 5.75 C. 3.5 D. 1.25
Bellingham Company produced 6,600 units of product that required 7 standard direct labor hours per unit. The standard variable overhead cost per unit is $2.60 p
Solve each inequality. Then compare the solutions. 2x + 13 < 19 - 4x + 23 < 11 2x + 13 < 19 x
