Question

using splitting method solve x square - 4 x + 1 ​

Answer 1

Answer:

x^2-4x+1

x^2-2x-2x+1

x^2-2x+1-2x

(x-1)^2-2x

(x-1)^2-(√2x)^2

(x-1+√2x)(x-1-√2x)