11-06-2017
Mathematics

contestada

Solve log(base 2) (x+1) + log (base 2) (x-5)= 4

Respuesta :

akaleti47 akaleti47

11-06-2017

(x+1)(x-5)= 2^4=16

x^2 -4x -5 =16

x^2-4x-21=0

x= -3 or 7
but we would choose 7 as the answer as -3 gives negative value at (x+1) and we know that log of negative number is not defined.

Answer Link

Otras preguntas

Rewrite the equation in exponential form, and show how you got there:

If a 30 year old client with a VO2 max of 56mL/kg/min and a resting heart rate of 50 is exercising at 40mL/kg/min what would their heart rate be

Whoever answers correct can have brainliest but answer ASAP!

I would like some help please!

Bobby was bringing his friends scalloping in Crystal River, FL. While searching for the ideal spot, he recorded the following depth of water at each stop throug

How many pounds is 3/12 and 1/12?

Someone help me please

Which of the following uses a descriptive survey? A.) determine the likelihood of obtaining a master’s degree B.) determine if extroverts are happier than intro

What evidence can you find in the poem that indicates the general’s mother used to work in the cane fields? be sure to reference specific lines from the text in

I wrote this on accident answer for points?