SOLUTION: What are the roots of the equation x^2-2x-1=0

Algebra ->  Square-cubic-other-roots -> SOLUTION: What are the roots of the equation x^2-2x-1=0      Log On


   



Question 858097: What are the roots of the equation x^2-2x-1=0
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
use compete the square technique
x^2-2x-1=0
x^2 -2x = 1
x^2 -2x +1 = 1 + 1
(x-1)^2 = 2
x-1 = square root(2)
x = 1 + square root(2)