# Math Help - Factorisation

1. ## Factorisation

Could someone factorise this really quick, with the whole answer, i just have to check if its right or wrong.

i got

x = -2 + or - Sqr (3)

2. what?

3. Factorise x^2 + 4x +1

4. correct

$(x+2-\sqrt{3})(x+2+\sqrt{3})$

5. Originally Posted by andrew2322
Factorise x^2 + 4x +1
$x=\frac{-4 \pm \sqrt{16-4}}{2} \Rightarrow -2 \pm \sqrt{3}$