Question

x^2-4x=1 solve by completing the square

Answer 1

-4x/2= -2
-2^2=4
(x-2)^2=1+4
x-2=square 5
x= 2 + - square 5

Answer 2

x^2-4x+(4/2)^2=1+(4/2)^2
(x-2)^2=1+4
x-2=+ or - sqrt(5)
x=sqrt(5)+2,-sqrt(5)+2

Answer 3

\[(x-2)^{2} = 1+4\]

\[(x-2)=\sqrt{5}\]
\[x= 2\pm \sqrt{5}\]