Solve: x^2 +4x+1=0

Question

Is the answer 2+-sqrt2?

Answer 1

no,

x^2 + 4x = -1
x^2 + 4x + 4 = -1 + 4
(x+2)^2 = 3
x+2 = ±√3

x = -2 ±√3

or use the formula, then simplify

Answer 2

Thanks I understand now.