tanyaballas tanyaballas
  • 06-02-2017
  • Mathematics
contestada

X^2 -2x -1 = 0

Pls help...show work and the answer

Respuesta :

LammettHash
LammettHash LammettHash
  • 06-02-2017
[tex]x^2-2x-1=x^2-2x+1-2=(x-1)^2-2=0[/tex]

Solve for [tex]x[/tex]:

[tex](x-1)^2-2=0[/tex]
[tex](x-1)^2=2[/tex]
[tex]x-1=\pm\sqrt2[/tex]
[tex]x=1\pm\sqrt2[/tex]
Answer Link

Otras preguntas

log(x+3)(2x+3)+log(x+3)(x+5)=2
what is the capacity of a cereal bowl
A rectangular billboard is 7 2/3 long and 4 yards wide what is the area of the billboard
why was George Washington the father of our country
how did the economic boom during the roaring twenties change consumers, businesses, manufacturing, and marketing practices
How to factor out the coefficient of the variable : 1/2m + 1/2 = ??
A switch is closed, and a lamp turns on.The switch is opened, the lamp turns off. eXplain what is meant by these two statements.
The north africian maghreb states , dominated by the atlas mountains,do not include
strengths and weaknesses of square keep castles?
Write a sentence comparing an executive order to a law.