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

Many American Indians died as a result of _______ brought to the West by pioneers.
the Vikings were seamen from which of the following countries? a. Norway b. Denmark c. Sweden d. all of the above
why you think participation is more important than competition
16 mm 5 mm 10 mm 8 mm 27 mm 3 mm 14 mm 3 mm What is the area
Use the squared identities to simplify 2sin^2xsin^2x
Help please! find the number that belongs under the radical.
Which statement about △UVW and △XYZ is true?
Need the answer asap
Which equation is equivalent to..???
Which of the following expressions demonstrates the distributive property? O 3+4 +5 = 4 +3+5 -2(5 + 7) = -217 +5) O3(-8 + 1) = 3(-8) + 3(1) 6[(7)(-2)] = [(6)(7)