horanilaith23 horanilaith23
  • 12-05-2020
  • Mathematics
contestada

if ln(x^2-x-1)=0 , then x= ?

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 12-05-2020

Answer:

  x = -1 or 2

Step-by-step explanation:

Taking the antilog, you have the quadratic ...

  x^2 -x -1 = 1

  x^2 -x -2 = 0 . . . . subtract 1

  (x -2)(x +1) = 0 . . . factor

The values of x that make these factors zero are the solutions to the equation.

  x = 2  or  x = -1

Ver imagen sqdancefan
Answer Link

Otras preguntas

What is diameter if the area is 200.96m squared
When was gunpowder invented?
find exact value using reference anglescot -53pi/6
he daily rainfall during two April weeks was: 1, 0.5, 0.3, 0, 0 ,0, 1.2, 3, 0, 1.1, 0.7, 2, 1.3, 2 inches. What was the median rainfall during the two weeks
When was gunpowder invented?
What is the advantage of a gold leaf electroscope ?
A major characteristic of the Anasazi culture in what is today the U.S. Southwest was (A) the building of large mounds for burial grounds (B) potlatch ceremonie
How is 18.089 written word form
When a car travels around a curve in the road what helps to keep the car driving in a curved path?
he daily rainfall during two April weeks was: 1, 0.5, 0.3, 0, 0 ,0, 1.2, 3, 0, 1.1, 0.7, 2, 1.3, 2 inches. What was the median rainfall during the two weeks